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Showing posts with label compuer related software. Show all posts
Showing posts with label compuer related software. Show all posts
Wednesday, July 8, 2009
Tuesday, July 7, 2009
Software Development:
Client-Server Applications
Desktop Application
Website data Parsers
Network Applications
Web applications
Web Design:
Graphic design
Web animation
Online demos
Web page coding
Banner ads
Hosting:
Domain Registration
Web Space
Email Service
.Net,ASP 2,Sql Server Support
Low Cost Packages
Security & Monitoring :CCTV
Security Camera Systems
Night Vision Security Cameras
Remote Monitoring
Digital Video Recording
Networking:
LAN & WAN
Wireless Network 802.ll g,b
Fiber Optic
PBX
Bluetooth Network
Plastic Cards :
Corporate ID Cards
Membership Cards
Financial Cards
Access Cards
Telecom Cards
Loyal/Reward Cards
Client-Server Applications
Desktop Application
Website data Parsers
Network Applications
Web applications
Web Design:
Graphic design
Web animation
Online demos
Web page coding
Banner ads
Hosting:
Domain Registration
Web Space
Email Service
.Net,ASP 2,Sql Server Support
Low Cost Packages
Security & Monitoring :CCTV
Security Camera Systems
Night Vision Security Cameras
Remote Monitoring
Digital Video Recording
Networking:
LAN & WAN
Wireless Network 802.ll g,b
Fiber Optic
PBX
Bluetooth Network
Plastic Cards :
Corporate ID Cards
Membership Cards
Financial Cards
Access Cards
Telecom Cards
Loyal/Reward Cards
wht is WinRar
WinRar Tutorial_Compression profiles, passwords and more
FIRST - Set Yer options correctly
Open WInRar
OPTIONS | SETTINGS | COMPRESSSION | CREATE DEFAULT
GENERAL | (ok now that we're there, here's what U do next)
But 1st -> realize that everything U set on the default profile will occur everytime U rar files. So if U only need a password occasionally, or other special settings, then create another profile for those purposes. U can change which profile U need to use when WinRar is open. The Default profile is used otherwise, such as when using WinRar from the context menus in explorer.
General tab:
Archive format RAR
Compression method BEST
size (enter in BYTES the size you want as the max single Rar file). I use 51,200,000 (50,000 KB x 1024). But chose yer max size as U wish.
Update method ADD AND REPLACE FILES
Archiving options: check > PUT RECOVERY RECORD
Archiving options: check > TEST ARCHIVED FILES.
Archiving options: check > DELETE FILES AFTER ARCHIVING ( unless U want yer HDD to fill up with the rars & the original files for some reason)
Archiving options: do NOT check > Put authenticy verification, as this can be a source of Error Messages being generated upon extraction.
Archiving options: check > Create SFX ONLY if U don't expect the person getting the filez to have WinRar. Otherwise leave it UNCHECKED.
Archiving options: do NOT check > Create Solid Archive. This can cause problems in certain cases.
Archiving options: do NOT check > Lock Arhive. This has NOTHING to do with a password.
Advanced tab:
Recovery Record -> U can leave it at 1%. Only set it higher if U expect the rar files to have a high risk of corruption. (very bad internet connections, or use on floppy disks, etc)
All else can be left alone. Don't bother with the Compression button.
Files Tab
File Paths -> STORE RELATIVE PATHS. (unless U have a specific folder U want the files to be extracted to. Such as c:\program files\No Name Appz\link catcher).
The rest leave alone
Backup Tab
No need to change anything.
Time Tab
Files to Process -> OF ANY TIME
Comment Tab
Whatever comment U enter there will be shown on the right hand pane when WinRar opens yer Rar files. Think of something fun, catchy,interesting. I always mention that the files have recovery record set, so if they are corrupted in transfer, the person knows to use REPAIR function.
Click OK, U have now created yer default profile.
==============================================
HOW TO CREATE a PASSWORDED PROFILE, which will NOT be the default:
open WInRar
Click the ADD Icon
ADVANCED | Push the SET PASSWORD Button
Check the SHOW PASSWORD box, so U can see what U typed and also copy/paste it to wherever U need it, such as on yer post. Now only one box will be open to enter the password. COPY/PASTE it to a txt file. I call mine WinRAR_Password.txt. Do this IMMEDIATELY afer entering it, before closing that window, or U may be very sorry later.
Enter the password. It is CASE SENSITIVE. If the password is 8 or more alpha-numeric characters, no one will be able to hack it. Unless they own a super-computer. Avoid using words that are found in dictionaries.
Check the encrypt file names box. That way, even if some nasty person obtains yer Rar file, they won't know what is in it, especially if the name U give the rar file is "Grandma_pix.rar" or whatever.
Back to GENERAL tab | PROFILES button | Save Current Settings to a New Profile
Enter the name of this profile. For example if the passwd is ht*p://www.superforum.com, U might name the profile Superforum. Only U will see this profile name. It does not go into the rar files made from it.
Do NOTHING more, do NOT set this as default profile.
Click OK | Click OK again.
Now U have a Passworded Profile.
================================================
HOW TO USE the PASSWORD PROFILE
Note -> Everything U set on the default profile will occur everytime U rar files. So when U need the password profile, follow these instructions. The Default profile is used otherwise, such as when using WinRar from the contest menus in explorer.
Open WinRar
Browse to the filez/folderz U want to Rar with Password.
Highlight all filez/folderz to be included.
Press the ADD button.
GENERAL tab | PROFILES button
Scoll down to the profile whcih has the password set. In my example Superforum
Click OK
The filez are Rar'd. U can check if U did all correctly by opening the rar filez, and seeing if a password is required.
Until U change back to DEFAULT profile in this same method, or close WinRar, all Rar'z U create after this will have a password.
================================================
HOW TO REPAIR A CORRUPTED RAR FILE:
With Win Explorer create a sub folder REPAIRED
Open WinRar, browse to the folder with the damaged Rar file(z). U can find which one is bad by selecting the 1st RAR file and using TEST button.
Select the damaged file, press REPAIR button.
In dialogue box, enter the path to the REPAIR subfolder, or browse to it.
As long as there is a RECOVERY record in that Rar, it will be repaired.
Copy all the NON-DAMAGED rars to your repair folder and rename the REPAIRED file back to it's original name.
Proceed with extraction in the REPAIR folder as normal.
===============================================
MISC TIPS:
If U select a folder to Rar, later when U extract it inside that folder, U end up with nested folders of same name. (We've all seen this often when extracting rars.
So Instead, go inside the folder, select all the filez & sub-folderz. Now U have a rar inside just one folder.
Note to w***z Groups, how about using WinRar Recovery option finally, and avoiding problems with corrupt DL's ?
FIRST - Set Yer options correctly
Open WInRar
OPTIONS | SETTINGS | COMPRESSSION | CREATE DEFAULT
GENERAL | (ok now that we're there, here's what U do next)
But 1st -> realize that everything U set on the default profile will occur everytime U rar files. So if U only need a password occasionally, or other special settings, then create another profile for those purposes. U can change which profile U need to use when WinRar is open. The Default profile is used otherwise, such as when using WinRar from the context menus in explorer.
General tab:
Archive format RAR
Compression method BEST
size (enter in BYTES the size you want as the max single Rar file). I use 51,200,000 (50,000 KB x 1024). But chose yer max size as U wish.
Update method ADD AND REPLACE FILES
Archiving options: check > PUT RECOVERY RECORD
Archiving options: check > TEST ARCHIVED FILES.
Archiving options: check > DELETE FILES AFTER ARCHIVING ( unless U want yer HDD to fill up with the rars & the original files for some reason)
Archiving options: do NOT check > Put authenticy verification, as this can be a source of Error Messages being generated upon extraction.
Archiving options: check > Create SFX ONLY if U don't expect the person getting the filez to have WinRar. Otherwise leave it UNCHECKED.
Archiving options: do NOT check > Create Solid Archive. This can cause problems in certain cases.
Archiving options: do NOT check > Lock Arhive. This has NOTHING to do with a password.
Advanced tab:
Recovery Record -> U can leave it at 1%. Only set it higher if U expect the rar files to have a high risk of corruption. (very bad internet connections, or use on floppy disks, etc)
All else can be left alone. Don't bother with the Compression button.
Files Tab
File Paths -> STORE RELATIVE PATHS. (unless U have a specific folder U want the files to be extracted to. Such as c:\program files\No Name Appz\link catcher).
The rest leave alone
Backup Tab
No need to change anything.
Time Tab
Files to Process -> OF ANY TIME
Comment Tab
Whatever comment U enter there will be shown on the right hand pane when WinRar opens yer Rar files. Think of something fun, catchy,interesting. I always mention that the files have recovery record set, so if they are corrupted in transfer, the person knows to use REPAIR function.
Click OK, U have now created yer default profile.
==============================================
HOW TO CREATE a PASSWORDED PROFILE, which will NOT be the default:
open WInRar
Click the ADD Icon
ADVANCED | Push the SET PASSWORD Button
Check the SHOW PASSWORD box, so U can see what U typed and also copy/paste it to wherever U need it, such as on yer post. Now only one box will be open to enter the password. COPY/PASTE it to a txt file. I call mine WinRAR_Password.txt. Do this IMMEDIATELY afer entering it, before closing that window, or U may be very sorry later.
Enter the password. It is CASE SENSITIVE. If the password is 8 or more alpha-numeric characters, no one will be able to hack it. Unless they own a super-computer. Avoid using words that are found in dictionaries.
Check the encrypt file names box. That way, even if some nasty person obtains yer Rar file, they won't know what is in it, especially if the name U give the rar file is "Grandma_pix.rar" or whatever.
Back to GENERAL tab | PROFILES button | Save Current Settings to a New Profile
Enter the name of this profile. For example if the passwd is ht*p://www.superforum.com, U might name the profile Superforum. Only U will see this profile name. It does not go into the rar files made from it.
Do NOTHING more, do NOT set this as default profile.
Click OK | Click OK again.
Now U have a Passworded Profile.
================================================
HOW TO USE the PASSWORD PROFILE
Note -> Everything U set on the default profile will occur everytime U rar files. So when U need the password profile, follow these instructions. The Default profile is used otherwise, such as when using WinRar from the contest menus in explorer.
Open WinRar
Browse to the filez/folderz U want to Rar with Password.
Highlight all filez/folderz to be included.
Press the ADD button.
GENERAL tab | PROFILES button
Scoll down to the profile whcih has the password set. In my example Superforum
Click OK
The filez are Rar'd. U can check if U did all correctly by opening the rar filez, and seeing if a password is required.
Until U change back to DEFAULT profile in this same method, or close WinRar, all Rar'z U create after this will have a password.
================================================
HOW TO REPAIR A CORRUPTED RAR FILE:
With Win Explorer create a sub folder REPAIRED
Open WinRar, browse to the folder with the damaged Rar file(z). U can find which one is bad by selecting the 1st RAR file and using TEST button.
Select the damaged file, press REPAIR button.
In dialogue box, enter the path to the REPAIR subfolder, or browse to it.
As long as there is a RECOVERY record in that Rar, it will be repaired.
Copy all the NON-DAMAGED rars to your repair folder and rename the REPAIRED file back to it's original name.
Proceed with extraction in the REPAIR folder as normal.
===============================================
MISC TIPS:
If U select a folder to Rar, later when U extract it inside that folder, U end up with nested folders of same name. (We've all seen this often when extracting rars.
So Instead, go inside the folder, select all the filez & sub-folderz. Now U have a rar inside just one folder.
Note to w***z Groups, how about using WinRar Recovery option finally, and avoiding problems with corrupt DL's ?
any kind of portable software if u need contact with me dotclub2000@yahoo.com
Convenient
Now you can carry your favorite computer programs along with all of your bookmarks, settings, email and more with you. Use them on any Windows computer. All without leaving any personal data behind.
Open
PortableApps.com provides a truly open platform that works with any hardware you like (USB flash drive, iPod, portable hard drive, etc). The entire platform is open source built around an open format that any hardware or software provider can use.
Free
The PortableApps.com Suite and Platform is free. It contains no spyware. There are no advertisements. It isn't a limited or trial version. There is no additional hardware or software to buy. You don't even have to give out your email address. It's 100% free to use, free to copy and free to share.
Now you can carry your favorite computer programs along with all of your bookmarks, settings, email and more with you. Use them on any Windows computer. All without leaving any personal data behind.
Open
PortableApps.com provides a truly open platform that works with any hardware you like (USB flash drive, iPod, portable hard drive, etc). The entire platform is open source built around an open format that any hardware or software provider can use.
Free
The PortableApps.com Suite and Platform is free. It contains no spyware. There are no advertisements. It isn't a limited or trial version. There is no additional hardware or software to buy. You don't even have to give out your email address. It's 100% free to use, free to copy and free to share.
histry of computer viruses
part 1
Like any other field in computer science, viruses have evolved -a great deal indeed- over the years. In the series of press releases which start today, we will look at the origins and evolution of malicious code since it first appeared up to the present.
Going back to the origin of viruses, it was in 1949 that Mathematician John Von Neumann described self-replicating programs which could resemble computer viruses as they are known today. However, it was not until the 60s that we find the predecessor of current viruses. In that decade, a group of programmers developed a game called Core Wars, which could reproduce every time it was run, and even saturate the memory of other players’ computers. The creators of this peculiar game also created the first antivirus, an application named Reeper, which could destroy copies created by Core Wars.
However, it was only in 1983 that one of these programmers announced the existence of Core Wars, which was described the following year in a prestigious scientific magazine: this was actually the starting point of what we call computer viruses today.
At that time, a still young MS-DOS was starting to become the preeminent operating system worldwide. This was a system with great prospects, but still many deficiencies as well, which arose from software developments and the lack of many hardware elements known today. Even like this, this new operating system became the target of a virus in 1986: Brain, a malicious code created in Pakistan which infected boot sectors of disks so that their contents could not be accessed. That year also saw the birth of the first Trojan: an application called PC-Write.
Shortly after, virus writers realized that infecting files could be even more harmful to systems. In 1987, a virus called Suriv-02 appeared, which infected COM files and opened the door to the infamous viruses Jerusalem or Viernes 13. However, the worst was still to come: 1988 set the date when the “Morris worm” appeared, infecting 6,000 computers.
From that date up to 1995 the types of malicious codes that are known today started being developed: the first macro viruses appeared, polymorphic viruses … Some of these even triggered epidemics, such as MichaelAngelo. However, there was an event that changed the virus scenario worldwide: the massive use of the Internet and e-mail. Little by little, viruses started adapting to this new situation until the appearance, in 1999, of Melissa, the first malicious code to cause a worldwide epidemic, opening a new era for computer viruses.
part 2
This second installment of ‘The evolution of viruses’ will look at how malicious code used to spread before use of the Internet and e-mail became as commonplace as it is today, and the main objectives of the creators of those earlier viruses.
Until the worldwide web and e-mail were adopted as a standard means of communication the world over, the main mediums through which viruses spread were floppy disks, removable drives, CDs, etc., containing files that were already infected or with the virus code in an executable boot sector.
When a virus entered a system it could go memory resident, infecting other files as they were opened, or it could start to reproduce immediately, also infecting other files on the system. The virus code could also be triggered by a certain event, for example when the system clock reached a certain date or time. In this case, the virus creator would calculate the time necessary for the virus to spread and then set a date –often with some particular significance- for the virus to activate. In this way, the virus would have an incubation period during which it didn’t visibly affect computers, but just spread from one system to another waiting for ‘D-day’ to launch its payload. This incubation period would be vital to the virus successfully infecting as many computers as possible.
One classic example of a destructive virus that lay low before releasing its payload was CIH, also known as Chernobyl. The most damaging version of this malicious code activated on April 26, when it would try to overwrite the flash-BIOS, the memory which includes the code needed to control PC devices. This virus, which first appeared in June 1998, had a serious impact for over two years and still continues to infect computers today.
Because of the way in which they propagate, these viruses spread very slowly, especially in comparison to the speed of today’s malicious code. Towards the end of the Eighties, for example, the Friday 13th (or Jerusalem) virus needed a long time to actually spread and continued to infect computers for some years. In contrast, experts reckon that in January 2003, SQLSlammer took just ten minutes to cause global communication problems across the Internet.
Notoriety versus stealth
For the most part, in the past, the activation of a malicious code triggered a series of on screen messages or images, or caused sounds to be emitted to catch the user’s attention. Such was the case with the Ping Pong virus, which displayed a ball bouncing from one side of the screen to another. This kind of elaborate display was used by the creator of the virus to gain as much notoriety as possible. Nowadays however, the opposite is the norm, with virus authors trying to make malicious code as discreet as possible, infecting users’ systems without them noticing that anything is amiss.
pat 3
This third installment of ‘The evolution of viruses’ will look at how the Internet and e-mail changed the propagation techniques used by computer viruses.
Internet and e-mail revolutionized communications. However, as expected, virus creators didn’t take long to realize that along with this new means of communication, an excellent way of spreading their creations far and wide had also dawned. Therefore, they quickly changed their aim from infecting a few computers while drawing as much attention to themselves as possible, to damaging as many computers as possible, as quickly as possible. This change in strategy resulted in the first global virus epidemic, which was caused by the Melissa worm.
With the appearance of Melissa, the economic impact of a virus started to become an issue. As a result, users -above all companies- started to become seriously concerned about the consequences of viruses on the security of their computers. This is how users discovered antivirus programs, which started to be installed widely. However, this also brought about a new challenge for virus writers, how to slip past this protection and how to persuade users to run infected files.
The answer to which of these virus strategies was the most effective came in the form of a new worm: Love Letter, which used a simple but effective ruse that could be considered an early type of social engineering. This strategy involves inserting false messages that trick users into thinking that the message includes anything, except a virus. This worm’s bait was simple; it led users to believe that they had received a love letter.
This technique is still the most widely used. However, it is closely followed by another tactic that has been the center of attention lately: exploiting vulnerabilities in commonly used software. This strategy offers a range of possibilities depending on the security hole exploited. The first malicious code to use this method –and quite successfully- were the BubbleBoy and Kakworm worms. These worms exploited a vulnerability in Internet Explorer by inserting HTML code in the body of the e-mail message, which allowed them to run automatically, without needing the user to do a thing.
Vulnerabilities allow many different types of actions to be carried out. For example, they allow viruses to be dropped on computers directly from the Internet -such as the Blaster worm-. In fact, the effects of the virus depend on the vulnerability that the virus author tries to exploit.
part 4
In the early days of computers, there were relatively few PCs likely to contain “sensitive” information, such as credit card numbers or other financial data, and these were generally limited to large companies that had already incorporated computers into working processes.
In any event, information stored in computers was not likely to be compromised, unless the computer was connected to a network through which the information could be transmitted. Of course, there were exceptions to this and there were cases in which hackers perpetrated frauds using data stored in IT systems. However, this was achieved through typical hacking activities, with no viruses involved.
The advent of the Internet however caused virus creators to change their objectives, and, from that moment on, they tried to infect as many computers as possible in the shortest time. Also, the introduction of Internet services -like e-banking or online shopping- brought in another change. Some virus creators started writing malicious codes not to infect computers, but, to steal confidential data associated to those services. Evidently, to achieve this, they needed viruses that could infect many computers silently.
Their malicious labor was finally rewarded with the appearance, in 1986, of a new breed of malicious code generically called “Trojan Horse”, or simply “Trojan”. This first Trojan was called PC-Write and tried to pass itself off as the shareware version of a text processor. When run, the Trojan displayed a functional text processor on screen. The problem was that, while the user wrote, PC-Write deleted and corrupted files on the computers’ hard disk.
After PC-Write, this type of malicious code evolved very quickly to reach the stage of present-day Trojans. Today, many of the people who design Trojans to steal data cannot be considered virus writers but simply thieves who, instead of using blowtorches or dynamite have turned to viruses to commit their crimes. Ldpinch.W or the Bancos or Tolger families of Trojans are examples of this
part 5
Even though none of them can be left aside, some particular fields of computer science have played a more determinant role than others with regard to the evolution of viruses. One of the most influential fields has been the development of programming languages.
These languages are basically a means of communication with computers in order to tell them what to do. Even though each of them has its own specific development and formulation rules, computers in fact understand only one language called "machine code".
Programming languages act as an interpreter between the programmer and the computer. Obviously, the more directly you can communicate with the computer, the better it will understand you, and more complex actions you can ask it to perform.
According to this, programming languages can be divided into "low and high level" languages, depending on whether their syntax is more understandable for programmers or for computers. A "high level" language uses expressions that are easily understandable for most programmers, but not so much for computers. Visual Basic and C are good examples of this type of language.
On the contrary, expressions used by "low level" languages are closer to machine code, but are very difficult to understand for someone who has not been involved in the programming process. One of the most powerful, most widely used examples of this type of language is "assembler".
In order to explain the use of programming languages through virus history, it is necessary to refer to hardware evolution. It is not difficult to understand that an old 8-bit processor does not have the power of modern 64-bit processors, and this of course, has had an impact on the programming languages used.
In this and the next installments of this series, we will look at the different programming languages used by virus creators through computer history:
- Virus antecessors: Core Wars
As was already explained in the first chapter of this series, a group of programs called Core Wars, developed by engineers at an important telecommunications company, are considered the antecessors of current-day viruses. Computer science was still in the early stages and programming languages had hardly developed. For this reason, authors of these proto-viruses used a language that was almost equal to machine code to program them.
Curiously enough, it seems that one of the Core Wars programmers was Robert Thomas Morris, whose son programmed -years later- the "Morris worm". This malicious code became extraordinarily famous since it managed to infect 6,000 computers, an impressive figure for 1988.
- The new gurus of the 8-bits and the assembler language.
The names Altair, IMSAI and Apple in USA and Sinclair, Atari and Commodore in Europe, bring memories of times gone by, when a new generation of computer enthusiasts "fought" to establish their place in the programming world. To be the best, programmers needed to have profound knowledge of machine code and assembler, as interpreters of high-level languages used too much run time. BASIC, for example, was a relatively easy to learn language which allowed users to develop programs simply and quickly. It had however, many limitations.
This caused the appearance of two groups of programmers: those who used assembler and those who turned to high-level languages (BASIC and PASCAL, mainly).
Computer aficionados of the time enjoyed themselves more by programming useful software than malware. However, 1981 saw the birth of what can be considered the first 8-bit virus. Its name was "Elk Cloner", and was programmed in machine code. This virus could infect Apple II systems and displayed a message when it infected a computer.
part 6
Computer viruses evolve in much the same way as in other areas of IT. Two of the most important factors in understanding how viruses have reached their current level are the development of programming languages and the appearance of increasingly powerful hardware.
In 1981, almost at the same time as Elk Kloner (the first virus for 8-bit processors) made its appearance, a new operating system was growing in popularity. Its full name was Microsoft Disk Operating System, although computer buffs throughout the world would soon refer to it simply as DOS.
DOS viruses
The development of MS DOS systems occurred in parallel to the appearance of new, more powerful hardware. Personal computers were gradually establishing themselves as tools that people could use in their everyday lives, and the result was that the number of PCs users grew substantially. Perhaps inevitably, more users also started creating viruses. Gradually, we witnessed the appearance of the first viruses and Trojans for DOS, written in assembler language and demonstrating a degree of skill on the part of their authors.
Far less programmers know assembler language than are familiar with high-level languages that are far easier to learn. Malicious code written in Fortran, Basic, Cobol, C or Pascal soon began to appear. The last two languages, which are well established and very powerful, are the most widely used, particularly in their TurboC and Turbo Pascal versions. This ultimately led to the appearance of “virus families”: that is, viruses that are followed by a vast number of related viruses which are slightly modified forms of the original code.
Other users took the less ‘artistic’ approach of creating destructive viruses that did not require any great knowledge of programming. As a result, batch processing file viruses or BAT viruses began to appear.
Win16 viruses
The development of 16-bit processors led to a new era in computing. The first consequence was the birth of Windows, which, at the time, was just an application to make it easier to handle DOS using a graphic interface.
The structure of Windows 3.xx files is rather difficult to understand, and the assembler language code is very complicated, as a result of which few programmers initially attempted to develop viruses for this platform. But this problem was soon solved thanks to the development of programming tools for high-level languages, above all Visual Basic. This application is so effective that many virus creators adopted it as their ‘daily working tool’. This meant that writing a virus had become a very straightforward task, and viruses soon appeared in their hundreds. This development was accompanied by the appearance of the first Trojans able to steal passwords. As a result, more than 500 variants of the AOL Trojan family -designed to steal personal information from infected computers- were identified.
part 7
This seventh edition on the history of computer viruses will look at how the development of Windows and Visual Basic has influenced the evolution of viruses, as with the development of these, worldwide epidemics also evolved such as the first one caused by Melissa in 1999.
While Windows changed from being an application designed to make DOS easier to manage to a 32-bit platform and operating system in its own right, virus creators went back to using assembler as the main language for programming viruses.
Versions 5 and 6 of Visual Basic (VB) were developed, making it the preferred tool, along with Borland Delphi (the Pascal development for the Windows environment), for Trojan and worm writers. Then, Visual C, a powerful environment developed in C for Windows, was adopted for creating viruses, Trojans and worms. This last type of malware gained unusual strength, taking over almost all other types of viruses. Even though the characteristics of worms have changed over time, they all have the same objective: to spread to as many computers as possible, as quickly as possible.
With time, Visual Basic became extremely popular and Microsoft implemented part of the functionality of this language as an interpreter capable of running script files with a similar syntax.
At the same time as the Win32 platform was implemented, the first script viruses also appeared: malware inside a simple text file. These demonstrated that not only executable files (.EXE and .COM files) could carry viruses. As already seen with BAT viruses, there are also other means of propagation, proving the saying "anything that can be executed directly or through a interpreter can contain malware." To be specific, the first viruses that infected the macros included in Microsoft Office emerged. As a result, Word, Excel, Access and PowerPoint become ways of spreading ‘lethal weapons’, which destroyed information when the user simply opened a document.
Melissa and self-executing worms
The powerful script interpreters in Microsoft Office allowed virus authors to arm their creations with the characteristics of worms. A clear example is Melissa, a Word macro virus with the characteristics of a worm that infects Word 97 and 2000 documents. This worm automatically sends itself out as an attachment to an e-mail message to the first 50 contacts in the Outlook address book on the affected computer. This technique, which has unfortunately become very popular nowadays, was first used in this virus which, in 1999, caused one of the largest epidemics in computer history in just a few days. In fact, companies like Microsoft, Intel or Lucent Technologies had to block their connections to the Internet due to the actions of Melissa.
The technique started by Melissa was developed in 1999 by viruses like VBS/Freelink, which unlike its predecessor sent itself out to all the contacts in the address book on the infected PC. This started a new wave of worms capable of sending themselves out to all the contacts in the Outlook address book on the infected computer. Of these, the worm that most stands out from the rest is VBS/LoveLetter, more commonly known as ‘I love You’, which emerged in May 2000 and caused an epidemic that caused damage estimated at 10,000 million euros. In order to get the user’s attention and help it to spread, this worm sent itself out in an e-mail message with the subject ‘ILOVEYOU’ and an attached file called ‘LOVE-LETTER-FOR-YOU.TXT.VBS’. When the user opened this attachment, the computer was infected.
As well as Melissa, in 1999 another type of virus emerged that also marked a milestone in virus history. In November of that year, VBS/BubbleBoy appeared, a new type of Internet worm written in VB Script. VBS/BubbleBoy was automatically run without the user needing to click on an attached file, as it exploited a vulnerability in Internet Explorer 5 to automatically run when the message was opened or viewed. This worm was followed in 2000 by JS/Kak.Worm, which spread by hiding behind Java Script in the auto-signature in Microsoft Outlook Express, allowing it to infect computers without the user needing to run an attached file. These were the first samples of a series of worms, which were joined later on by worms capable of attacking computers when the user is browsing the Internet.
Like any other field in computer science, viruses have evolved -a great deal indeed- over the years. In the series of press releases which start today, we will look at the origins and evolution of malicious code since it first appeared up to the present.
Going back to the origin of viruses, it was in 1949 that Mathematician John Von Neumann described self-replicating programs which could resemble computer viruses as they are known today. However, it was not until the 60s that we find the predecessor of current viruses. In that decade, a group of programmers developed a game called Core Wars, which could reproduce every time it was run, and even saturate the memory of other players’ computers. The creators of this peculiar game also created the first antivirus, an application named Reeper, which could destroy copies created by Core Wars.
However, it was only in 1983 that one of these programmers announced the existence of Core Wars, which was described the following year in a prestigious scientific magazine: this was actually the starting point of what we call computer viruses today.
At that time, a still young MS-DOS was starting to become the preeminent operating system worldwide. This was a system with great prospects, but still many deficiencies as well, which arose from software developments and the lack of many hardware elements known today. Even like this, this new operating system became the target of a virus in 1986: Brain, a malicious code created in Pakistan which infected boot sectors of disks so that their contents could not be accessed. That year also saw the birth of the first Trojan: an application called PC-Write.
Shortly after, virus writers realized that infecting files could be even more harmful to systems. In 1987, a virus called Suriv-02 appeared, which infected COM files and opened the door to the infamous viruses Jerusalem or Viernes 13. However, the worst was still to come: 1988 set the date when the “Morris worm” appeared, infecting 6,000 computers.
From that date up to 1995 the types of malicious codes that are known today started being developed: the first macro viruses appeared, polymorphic viruses … Some of these even triggered epidemics, such as MichaelAngelo. However, there was an event that changed the virus scenario worldwide: the massive use of the Internet and e-mail. Little by little, viruses started adapting to this new situation until the appearance, in 1999, of Melissa, the first malicious code to cause a worldwide epidemic, opening a new era for computer viruses.
part 2
This second installment of ‘The evolution of viruses’ will look at how malicious code used to spread before use of the Internet and e-mail became as commonplace as it is today, and the main objectives of the creators of those earlier viruses.
Until the worldwide web and e-mail were adopted as a standard means of communication the world over, the main mediums through which viruses spread were floppy disks, removable drives, CDs, etc., containing files that were already infected or with the virus code in an executable boot sector.
When a virus entered a system it could go memory resident, infecting other files as they were opened, or it could start to reproduce immediately, also infecting other files on the system. The virus code could also be triggered by a certain event, for example when the system clock reached a certain date or time. In this case, the virus creator would calculate the time necessary for the virus to spread and then set a date –often with some particular significance- for the virus to activate. In this way, the virus would have an incubation period during which it didn’t visibly affect computers, but just spread from one system to another waiting for ‘D-day’ to launch its payload. This incubation period would be vital to the virus successfully infecting as many computers as possible.
One classic example of a destructive virus that lay low before releasing its payload was CIH, also known as Chernobyl. The most damaging version of this malicious code activated on April 26, when it would try to overwrite the flash-BIOS, the memory which includes the code needed to control PC devices. This virus, which first appeared in June 1998, had a serious impact for over two years and still continues to infect computers today.
Because of the way in which they propagate, these viruses spread very slowly, especially in comparison to the speed of today’s malicious code. Towards the end of the Eighties, for example, the Friday 13th (or Jerusalem) virus needed a long time to actually spread and continued to infect computers for some years. In contrast, experts reckon that in January 2003, SQLSlammer took just ten minutes to cause global communication problems across the Internet.
Notoriety versus stealth
For the most part, in the past, the activation of a malicious code triggered a series of on screen messages or images, or caused sounds to be emitted to catch the user’s attention. Such was the case with the Ping Pong virus, which displayed a ball bouncing from one side of the screen to another. This kind of elaborate display was used by the creator of the virus to gain as much notoriety as possible. Nowadays however, the opposite is the norm, with virus authors trying to make malicious code as discreet as possible, infecting users’ systems without them noticing that anything is amiss.
pat 3
This third installment of ‘The evolution of viruses’ will look at how the Internet and e-mail changed the propagation techniques used by computer viruses.
Internet and e-mail revolutionized communications. However, as expected, virus creators didn’t take long to realize that along with this new means of communication, an excellent way of spreading their creations far and wide had also dawned. Therefore, they quickly changed their aim from infecting a few computers while drawing as much attention to themselves as possible, to damaging as many computers as possible, as quickly as possible. This change in strategy resulted in the first global virus epidemic, which was caused by the Melissa worm.
With the appearance of Melissa, the economic impact of a virus started to become an issue. As a result, users -above all companies- started to become seriously concerned about the consequences of viruses on the security of their computers. This is how users discovered antivirus programs, which started to be installed widely. However, this also brought about a new challenge for virus writers, how to slip past this protection and how to persuade users to run infected files.
The answer to which of these virus strategies was the most effective came in the form of a new worm: Love Letter, which used a simple but effective ruse that could be considered an early type of social engineering. This strategy involves inserting false messages that trick users into thinking that the message includes anything, except a virus. This worm’s bait was simple; it led users to believe that they had received a love letter.
This technique is still the most widely used. However, it is closely followed by another tactic that has been the center of attention lately: exploiting vulnerabilities in commonly used software. This strategy offers a range of possibilities depending on the security hole exploited. The first malicious code to use this method –and quite successfully- were the BubbleBoy and Kakworm worms. These worms exploited a vulnerability in Internet Explorer by inserting HTML code in the body of the e-mail message, which allowed them to run automatically, without needing the user to do a thing.
Vulnerabilities allow many different types of actions to be carried out. For example, they allow viruses to be dropped on computers directly from the Internet -such as the Blaster worm-. In fact, the effects of the virus depend on the vulnerability that the virus author tries to exploit.
part 4
In the early days of computers, there were relatively few PCs likely to contain “sensitive” information, such as credit card numbers or other financial data, and these were generally limited to large companies that had already incorporated computers into working processes.
In any event, information stored in computers was not likely to be compromised, unless the computer was connected to a network through which the information could be transmitted. Of course, there were exceptions to this and there were cases in which hackers perpetrated frauds using data stored in IT systems. However, this was achieved through typical hacking activities, with no viruses involved.
The advent of the Internet however caused virus creators to change their objectives, and, from that moment on, they tried to infect as many computers as possible in the shortest time. Also, the introduction of Internet services -like e-banking or online shopping- brought in another change. Some virus creators started writing malicious codes not to infect computers, but, to steal confidential data associated to those services. Evidently, to achieve this, they needed viruses that could infect many computers silently.
Their malicious labor was finally rewarded with the appearance, in 1986, of a new breed of malicious code generically called “Trojan Horse”, or simply “Trojan”. This first Trojan was called PC-Write and tried to pass itself off as the shareware version of a text processor. When run, the Trojan displayed a functional text processor on screen. The problem was that, while the user wrote, PC-Write deleted and corrupted files on the computers’ hard disk.
After PC-Write, this type of malicious code evolved very quickly to reach the stage of present-day Trojans. Today, many of the people who design Trojans to steal data cannot be considered virus writers but simply thieves who, instead of using blowtorches or dynamite have turned to viruses to commit their crimes. Ldpinch.W or the Bancos or Tolger families of Trojans are examples of this
part 5
Even though none of them can be left aside, some particular fields of computer science have played a more determinant role than others with regard to the evolution of viruses. One of the most influential fields has been the development of programming languages.
These languages are basically a means of communication with computers in order to tell them what to do. Even though each of them has its own specific development and formulation rules, computers in fact understand only one language called "machine code".
Programming languages act as an interpreter between the programmer and the computer. Obviously, the more directly you can communicate with the computer, the better it will understand you, and more complex actions you can ask it to perform.
According to this, programming languages can be divided into "low and high level" languages, depending on whether their syntax is more understandable for programmers or for computers. A "high level" language uses expressions that are easily understandable for most programmers, but not so much for computers. Visual Basic and C are good examples of this type of language.
On the contrary, expressions used by "low level" languages are closer to machine code, but are very difficult to understand for someone who has not been involved in the programming process. One of the most powerful, most widely used examples of this type of language is "assembler".
In order to explain the use of programming languages through virus history, it is necessary to refer to hardware evolution. It is not difficult to understand that an old 8-bit processor does not have the power of modern 64-bit processors, and this of course, has had an impact on the programming languages used.
In this and the next installments of this series, we will look at the different programming languages used by virus creators through computer history:
- Virus antecessors: Core Wars
As was already explained in the first chapter of this series, a group of programs called Core Wars, developed by engineers at an important telecommunications company, are considered the antecessors of current-day viruses. Computer science was still in the early stages and programming languages had hardly developed. For this reason, authors of these proto-viruses used a language that was almost equal to machine code to program them.
Curiously enough, it seems that one of the Core Wars programmers was Robert Thomas Morris, whose son programmed -years later- the "Morris worm". This malicious code became extraordinarily famous since it managed to infect 6,000 computers, an impressive figure for 1988.
- The new gurus of the 8-bits and the assembler language.
The names Altair, IMSAI and Apple in USA and Sinclair, Atari and Commodore in Europe, bring memories of times gone by, when a new generation of computer enthusiasts "fought" to establish their place in the programming world. To be the best, programmers needed to have profound knowledge of machine code and assembler, as interpreters of high-level languages used too much run time. BASIC, for example, was a relatively easy to learn language which allowed users to develop programs simply and quickly. It had however, many limitations.
This caused the appearance of two groups of programmers: those who used assembler and those who turned to high-level languages (BASIC and PASCAL, mainly).
Computer aficionados of the time enjoyed themselves more by programming useful software than malware. However, 1981 saw the birth of what can be considered the first 8-bit virus. Its name was "Elk Cloner", and was programmed in machine code. This virus could infect Apple II systems and displayed a message when it infected a computer.
part 6
Computer viruses evolve in much the same way as in other areas of IT. Two of the most important factors in understanding how viruses have reached their current level are the development of programming languages and the appearance of increasingly powerful hardware.
In 1981, almost at the same time as Elk Kloner (the first virus for 8-bit processors) made its appearance, a new operating system was growing in popularity. Its full name was Microsoft Disk Operating System, although computer buffs throughout the world would soon refer to it simply as DOS.
DOS viruses
The development of MS DOS systems occurred in parallel to the appearance of new, more powerful hardware. Personal computers were gradually establishing themselves as tools that people could use in their everyday lives, and the result was that the number of PCs users grew substantially. Perhaps inevitably, more users also started creating viruses. Gradually, we witnessed the appearance of the first viruses and Trojans for DOS, written in assembler language and demonstrating a degree of skill on the part of their authors.
Far less programmers know assembler language than are familiar with high-level languages that are far easier to learn. Malicious code written in Fortran, Basic, Cobol, C or Pascal soon began to appear. The last two languages, which are well established and very powerful, are the most widely used, particularly in their TurboC and Turbo Pascal versions. This ultimately led to the appearance of “virus families”: that is, viruses that are followed by a vast number of related viruses which are slightly modified forms of the original code.
Other users took the less ‘artistic’ approach of creating destructive viruses that did not require any great knowledge of programming. As a result, batch processing file viruses or BAT viruses began to appear.
Win16 viruses
The development of 16-bit processors led to a new era in computing. The first consequence was the birth of Windows, which, at the time, was just an application to make it easier to handle DOS using a graphic interface.
The structure of Windows 3.xx files is rather difficult to understand, and the assembler language code is very complicated, as a result of which few programmers initially attempted to develop viruses for this platform. But this problem was soon solved thanks to the development of programming tools for high-level languages, above all Visual Basic. This application is so effective that many virus creators adopted it as their ‘daily working tool’. This meant that writing a virus had become a very straightforward task, and viruses soon appeared in their hundreds. This development was accompanied by the appearance of the first Trojans able to steal passwords. As a result, more than 500 variants of the AOL Trojan family -designed to steal personal information from infected computers- were identified.
part 7
This seventh edition on the history of computer viruses will look at how the development of Windows and Visual Basic has influenced the evolution of viruses, as with the development of these, worldwide epidemics also evolved such as the first one caused by Melissa in 1999.
While Windows changed from being an application designed to make DOS easier to manage to a 32-bit platform and operating system in its own right, virus creators went back to using assembler as the main language for programming viruses.
Versions 5 and 6 of Visual Basic (VB) were developed, making it the preferred tool, along with Borland Delphi (the Pascal development for the Windows environment), for Trojan and worm writers. Then, Visual C, a powerful environment developed in C for Windows, was adopted for creating viruses, Trojans and worms. This last type of malware gained unusual strength, taking over almost all other types of viruses. Even though the characteristics of worms have changed over time, they all have the same objective: to spread to as many computers as possible, as quickly as possible.
With time, Visual Basic became extremely popular and Microsoft implemented part of the functionality of this language as an interpreter capable of running script files with a similar syntax.
At the same time as the Win32 platform was implemented, the first script viruses also appeared: malware inside a simple text file. These demonstrated that not only executable files (.EXE and .COM files) could carry viruses. As already seen with BAT viruses, there are also other means of propagation, proving the saying "anything that can be executed directly or through a interpreter can contain malware." To be specific, the first viruses that infected the macros included in Microsoft Office emerged. As a result, Word, Excel, Access and PowerPoint become ways of spreading ‘lethal weapons’, which destroyed information when the user simply opened a document.
Melissa and self-executing worms
The powerful script interpreters in Microsoft Office allowed virus authors to arm their creations with the characteristics of worms. A clear example is Melissa, a Word macro virus with the characteristics of a worm that infects Word 97 and 2000 documents. This worm automatically sends itself out as an attachment to an e-mail message to the first 50 contacts in the Outlook address book on the affected computer. This technique, which has unfortunately become very popular nowadays, was first used in this virus which, in 1999, caused one of the largest epidemics in computer history in just a few days. In fact, companies like Microsoft, Intel or Lucent Technologies had to block their connections to the Internet due to the actions of Melissa.
The technique started by Melissa was developed in 1999 by viruses like VBS/Freelink, which unlike its predecessor sent itself out to all the contacts in the address book on the infected PC. This started a new wave of worms capable of sending themselves out to all the contacts in the Outlook address book on the infected computer. Of these, the worm that most stands out from the rest is VBS/LoveLetter, more commonly known as ‘I love You’, which emerged in May 2000 and caused an epidemic that caused damage estimated at 10,000 million euros. In order to get the user’s attention and help it to spread, this worm sent itself out in an e-mail message with the subject ‘ILOVEYOU’ and an attached file called ‘LOVE-LETTER-FOR-YOU.TXT.VBS’. When the user opened this attachment, the computer was infected.
As well as Melissa, in 1999 another type of virus emerged that also marked a milestone in virus history. In November of that year, VBS/BubbleBoy appeared, a new type of Internet worm written in VB Script. VBS/BubbleBoy was automatically run without the user needing to click on an attached file, as it exploited a vulnerability in Internet Explorer 5 to automatically run when the message was opened or viewed. This worm was followed in 2000 by JS/Kak.Worm, which spread by hiding behind Java Script in the auto-signature in Microsoft Outlook Express, allowing it to infect computers without the user needing to run an attached file. These were the first samples of a series of worms, which were joined later on by worms capable of attacking computers when the user is browsing the Internet.
why PCs crash U must Know
10 reasons why PCs crash U must Know
Fatal error: the system has become unstable or is busy," it says. "Enter to return to Windows or press Control-Alt-Delete to restart your computer. If you do this you will lose any unsaved information in all open applications."
You have just been struck by the Blue Screen of Death. Anyone who uses Mcft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?
1 Hardware conflict
The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.
For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.
If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:
* Start-Settings-Control Panel-System-Device Manager.
Often if a device has a problem a yellow '!' appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.
Sometimes a device might share an IRQ with something described as 'IRQ holder for PCI steering'. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.
Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).
When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.
To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.
2 Bad Ram
Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.
But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.
One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.
Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.
EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.
3 BIOS settings
Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.
Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.
A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer's display.
Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to 'yes' to allow Windows to do this.).
4 Hard disk drives
After a few weeks, the information on a hard disk drive starts to become piecemeal or fragmented. It is a good idea to defragment the hard disk every week or so, to prevent the disk from causing a screen freeze. Go to
* Start-Programs-Accessories-System Tools-Disk Defragmenter
This will start the procedure. You will be unable to write data to the hard drive (to save it) while the disk is defragmenting, so it is a good idea to schedule the procedure for a period of inactivity using the Task Scheduler.
The Task Scheduler should be one of the small icons on the bottom right of the Windows opening page (the desktop).
Some lockups and screen freezes caused by hard disk problems can be solved by reducing the read-ahead optimisation. This can be adjusted by going to
* Start-Settings-Control Panel-System Icon-Performance-File System-Hard Disk.
Hard disks will slow down and crash if they are too full. Do some housekeeping on your hard drive every few months and free some space on it. Open the Windows folder on the C drive and find the Temporary Internet Files folder. Deleting the contents (not the folder) can free a lot of space.
Empty the Recycle Bin every week to free more space. Hard disk drives should be scanned every week for errors or bad sectors. Go to
* Start-Programs-Accessories-System Tools-ScanDisk
Otherwise assign the Task Scheduler to perform this operation at night when the computer is not in use.
5 Fatal OE exceptions and VXD errors
Fatal OE exception errors and VXD errors are often caused by video card problems.
These can often be resolved easily by reducing the resolution of the video display. Go to
* Start-Settings-Control Panel-Display-Settings
Here you should slide the screen area bar to the left. Take a look at the colour settings on the left of that window. For most desktops, high colour 16-bit depth is adequate.
If the screen freezes or you experience system lockups it might be due to the video card. Make sure it does not have a hardware conflict. Go to
* Start-Settings-Control Panel-System-Device Manager
Here, select the + beside Display Adapter. A line of text describing your video card should appear. Select it (make it blue) and press properties. Then select Resources and select each line in the window. Look for a message that says No Conflicts.
If you have video card hardware conflict, you will see it here. Be careful at this point and make a note of everything you do in case you make things worse.
The way to resolve a hardware conflict is to uncheck the Use Automatic Settings box and hit the Change Settings button. You are searching for a setting that will display a No Conflicts message.
Another useful way to resolve video problems is to go to
* Start-Settings-Control Panel-System-Performance-Graphics
Here you should move the Hardware Acceleration slider to the left. As ever, the most common cause of problems relating to graphics cards is old or faulty drivers (a driver is a small piece of software used by a computer to communicate with a device).
Look up your video card's manufacturer on the internet and search for the most recent drivers for it.
6 Viruses
Often the first sign of a virus infection is instability. Some viruses erase the boot sector of a hard drive, making it impossible to start. This is why it is a good idea to create a Windows start-up disk. Go to
* Start-Settings-Control Panel-Add/Remove Programs
Here, look for the Start Up Disk tab. Virus protection requires constant vigilance.
A virus scanner requires a list of virus signatures in order to be able to identify viruses. These signatures are stored in a DAT file. DAT files should be updated weekly from the website of your antivirus software manufacturer.
An excellent antivirus programme is McAfee VirusScan by Network Associates ( www.nai.com). Another is Norton AntiVirus 2000, made by Symantec ( www.symantec.com).
7 Printers
The action of sending a document to print creates a bigger file, often called a postscript file.
Printers have only a small amount of memory, called a buffer. This can be easily overloaded. Printing a document also uses a considerable amount of CPU power. This will also slow down the computer's performance.
If the printer is trying to print unusual characters, these might not be recognised, and can crash the computer. Sometimes printers will not recover from a crash because of confusion in the buffer. A good way to clear the buffer is to unplug the printer for ten seconds. Booting up from a powerless state, also called a cold boot, will restore the printer's default settings and you may be able to carry on.
8 Software
A common cause of computer crash is faulty or badly-installed software. Often the problem can be cured by uninstalling the software and then reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an application from your system properly. This will also remove references to the programme in the System Registry and leaves the way clear for a completely fresh copy.
The System Registry can be corrupted by old references to obsolete software that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean up the System Registry and remove obsolete entries. It works on Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME), NT4 and Windows 2000.
Read the instructions and use it carefully so you don't do permanent damage to the Registry. If the Registry is damaged you will have to reinstall your operating system. Reg Cleaner can be obtained from www.jv16.org
Often a Windows problem can be resolved by entering Safe Mode. This can be done during start-up. When you see the message "Starting Windows" press F4. This should take you into Safe Mode.
Safe Mode loads a minimum of drivers. It allows you to find and fix problems that prevent Windows from loading properly.
Sometimes installing Windows is difficult because of unsuitable BIOS settings. If you keep getting SUWIN error messages (Windows setup) during the Windows installation, then try entering the BIOS and disabling the CPU internal cache. Try to disable the Level 2 (L2) cache if that doesn't work.
Remember to restore all the BIOS settings back to their former settings following installation.
9 Overheating
Central processing units (CPUs) are usually equipped with fans to keep them cool. If the fan fails or if the CPU gets old it may start to overheat and generate a particular kind of error called a kernel error. This is a common problem in chips that have been overclocked to operate at higher speeds than they are supposed to.
One remedy is to get a bigger better fan and install it on top of the CPU. Specialist cooling fans/heatsinks are available from www.computernerd.com or www.coolit.com
CPU problems can often be fixed by disabling the CPU internal cache in the BIOS. This will make the machine run more slowly, but it should also be more stable.
10 Power supply problems
With all the new construction going on around the country the steady supply of electricity has become disrupted. A power surge or spike can crash a computer as easily as a power cut.
If this has become a nuisance for you then consider buying a uninterrupted power supply (UPS). This will give you a clean power supply when there is electricity, and it will give you a few minutes to perform a controlled shutdown in case of a power cut.
It is a good investment if your data are critical, because a power cut will cause any unsaved data to be lost.
Fatal error: the system has become unstable or is busy," it says. "Enter to return to Windows or press Control-Alt-Delete to restart your computer. If you do this you will lose any unsaved information in all open applications."
You have just been struck by the Blue Screen of Death. Anyone who uses Mcft Windows will be familiar with this. What can you do? More importantly, how can you prevent it happening?
1 Hardware conflict
The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.
For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.
If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:
* Start-Settings-Control Panel-System-Device Manager.
Often if a device has a problem a yellow '!' appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.
Sometimes a device might share an IRQ with something described as 'IRQ holder for PCI steering'. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.
Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).
When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.
To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.
2 Bad Ram
Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.
But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.
One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.
Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.
EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.
3 BIOS settings
Every motherboard is supplied with a range of chipset settings that are decided in the factory. A common way to access these settings is to press the F2 or delete button during the first few seconds of a boot-up.
Once inside the BIOS, great care should be taken. It is a good idea to write down on a piece of paper all the settings that appear on the screen. That way, if you change something and the computer becomes more unstable, you will know what settings to revert to.
A common BIOS error concerns the CAS latency. This refers to the Ram. Older EDO (extended data out) Ram has a CAS latency of 3. Newer SDRam has a CAS latency of 2. Setting the wrong figure can cause the Ram to lock up and freeze the computer's display.
Mcft Windows is better at allocating IRQ numbers than any BIOS. If possible set the IRQ numbers to Auto in the BIOS. This will allow Windows to allocate the IRQ numbers (make sure the BIOS setting for Plug and Play OS is switched to 'yes' to allow Windows to do this.).
4 Hard disk drives
After a few weeks, the information on a hard disk drive starts to become piecemeal or fragmented. It is a good idea to defragment the hard disk every week or so, to prevent the disk from causing a screen freeze. Go to
* Start-Programs-Accessories-System Tools-Disk Defragmenter
This will start the procedure. You will be unable to write data to the hard drive (to save it) while the disk is defragmenting, so it is a good idea to schedule the procedure for a period of inactivity using the Task Scheduler.
The Task Scheduler should be one of the small icons on the bottom right of the Windows opening page (the desktop).
Some lockups and screen freezes caused by hard disk problems can be solved by reducing the read-ahead optimisation. This can be adjusted by going to
* Start-Settings-Control Panel-System Icon-Performance-File System-Hard Disk.
Hard disks will slow down and crash if they are too full. Do some housekeeping on your hard drive every few months and free some space on it. Open the Windows folder on the C drive and find the Temporary Internet Files folder. Deleting the contents (not the folder) can free a lot of space.
Empty the Recycle Bin every week to free more space. Hard disk drives should be scanned every week for errors or bad sectors. Go to
* Start-Programs-Accessories-System Tools-ScanDisk
Otherwise assign the Task Scheduler to perform this operation at night when the computer is not in use.
5 Fatal OE exceptions and VXD errors
Fatal OE exception errors and VXD errors are often caused by video card problems.
These can often be resolved easily by reducing the resolution of the video display. Go to
* Start-Settings-Control Panel-Display-Settings
Here you should slide the screen area bar to the left. Take a look at the colour settings on the left of that window. For most desktops, high colour 16-bit depth is adequate.
If the screen freezes or you experience system lockups it might be due to the video card. Make sure it does not have a hardware conflict. Go to
* Start-Settings-Control Panel-System-Device Manager
Here, select the + beside Display Adapter. A line of text describing your video card should appear. Select it (make it blue) and press properties. Then select Resources and select each line in the window. Look for a message that says No Conflicts.
If you have video card hardware conflict, you will see it here. Be careful at this point and make a note of everything you do in case you make things worse.
The way to resolve a hardware conflict is to uncheck the Use Automatic Settings box and hit the Change Settings button. You are searching for a setting that will display a No Conflicts message.
Another useful way to resolve video problems is to go to
* Start-Settings-Control Panel-System-Performance-Graphics
Here you should move the Hardware Acceleration slider to the left. As ever, the most common cause of problems relating to graphics cards is old or faulty drivers (a driver is a small piece of software used by a computer to communicate with a device).
Look up your video card's manufacturer on the internet and search for the most recent drivers for it.
6 Viruses
Often the first sign of a virus infection is instability. Some viruses erase the boot sector of a hard drive, making it impossible to start. This is why it is a good idea to create a Windows start-up disk. Go to
* Start-Settings-Control Panel-Add/Remove Programs
Here, look for the Start Up Disk tab. Virus protection requires constant vigilance.
A virus scanner requires a list of virus signatures in order to be able to identify viruses. These signatures are stored in a DAT file. DAT files should be updated weekly from the website of your antivirus software manufacturer.
An excellent antivirus programme is McAfee VirusScan by Network Associates ( www.nai.com). Another is Norton AntiVirus 2000, made by Symantec ( www.symantec.com).
7 Printers
The action of sending a document to print creates a bigger file, often called a postscript file.
Printers have only a small amount of memory, called a buffer. This can be easily overloaded. Printing a document also uses a considerable amount of CPU power. This will also slow down the computer's performance.
If the printer is trying to print unusual characters, these might not be recognised, and can crash the computer. Sometimes printers will not recover from a crash because of confusion in the buffer. A good way to clear the buffer is to unplug the printer for ten seconds. Booting up from a powerless state, also called a cold boot, will restore the printer's default settings and you may be able to carry on.
8 Software
A common cause of computer crash is faulty or badly-installed software. Often the problem can be cured by uninstalling the software and then reinstalling it. Use Norton Uninstall or Uninstall Shield to remove an application from your system properly. This will also remove references to the programme in the System Registry and leaves the way clear for a completely fresh copy.
The System Registry can be corrupted by old references to obsolete software that you thought was uninstalled. Use Reg Cleaner by Jouni Vuorio to clean up the System Registry and remove obsolete entries. It works on Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows Millennium Edition (ME), NT4 and Windows 2000.
Read the instructions and use it carefully so you don't do permanent damage to the Registry. If the Registry is damaged you will have to reinstall your operating system. Reg Cleaner can be obtained from www.jv16.org
Often a Windows problem can be resolved by entering Safe Mode. This can be done during start-up. When you see the message "Starting Windows" press F4. This should take you into Safe Mode.
Safe Mode loads a minimum of drivers. It allows you to find and fix problems that prevent Windows from loading properly.
Sometimes installing Windows is difficult because of unsuitable BIOS settings. If you keep getting SUWIN error messages (Windows setup) during the Windows installation, then try entering the BIOS and disabling the CPU internal cache. Try to disable the Level 2 (L2) cache if that doesn't work.
Remember to restore all the BIOS settings back to their former settings following installation.
9 Overheating
Central processing units (CPUs) are usually equipped with fans to keep them cool. If the fan fails or if the CPU gets old it may start to overheat and generate a particular kind of error called a kernel error. This is a common problem in chips that have been overclocked to operate at higher speeds than they are supposed to.
One remedy is to get a bigger better fan and install it on top of the CPU. Specialist cooling fans/heatsinks are available from www.computernerd.com or www.coolit.com
CPU problems can often be fixed by disabling the CPU internal cache in the BIOS. This will make the machine run more slowly, but it should also be more stable.
10 Power supply problems
With all the new construction going on around the country the steady supply of electricity has become disrupted. A power surge or spike can crash a computer as easily as a power cut.
If this has become a nuisance for you then consider buying a uninterrupted power supply (UPS). This will give you a clean power supply when there is electricity, and it will give you a few minutes to perform a controlled shutdown in case of a power cut.
It is a good investment if your data are critical, because a power cut will cause any unsaved data to be lost.
Sunday, July 5, 2009
important of SEO
Looking to soup up your site? What you need is Hot Rod Linking.
Linking is becoming more and more vital for making a website visible and credible to both search engines and human readers. In fact, if you could only do one thing to optimize your website for search, it should be souping up your links.
In this first part of “Hot Rod Linking,” we’ll talk about why linking is a critical part of your SEO efforts, and we’ll also give you some basic linking strategies to start with. And in the spirit of linking, we’ll give you some links to some of the most popular linking resources on the Web.
Why is linking so important in SEO?
Linking has become more significant for search engines because website design and SEO were being designed to “trick” search engines, even at the expense of usability. In addition, linking is a time-intensive and labor-intensive exercise for both quantity and quality linking.
Linking is what gives a website credibility in the eyes of not only users, but also the search engines for the same reason that citations and references are in term papers. More and better links mean that your site is more relevant and popular to searchers. For ranking, linking is as important as, if not more important than, the actual content of a site.
For example, if you search Google for the keyword phrase “children’s books”, you’ll get Random House ranked on page 1 position 3. The keyword “children’s books” isn’t even in the content and the landing page doesn’t have that keyword in important places such as the page title, description meta tag or keyword meta tag. What the Random House website does have is 1,130 inbound links from quality sources such as public libraries, literacy foundations, and special interest groups such as the Association of Booksellers for Children.
Basic linking strategies to hook users
To “hook” users and linking partners, here are some basic linking strategies:
* Content Development: As we mentioned elsewhere, users search to find answers to questions and solutions to problems. Some of the most popular web content includes “Top 10’s,” “Do’s and Don’ts” lists, “How Tos,” tests/quizzes, and FAQs. These items are popular because they offer answers and solutions.
* Link Bait: Humor, debate, news, incentives, ego, and contrarian positions “hook” users. When it comes to this strategy, a catchy headline, like “The Secret of…” or “What They Don’t Want You to Know About…” can be a big draw.
* Widgets and Tools: Specific widgets and tools that are relevant to your site, such as mortgage calculators for banks or body mass index calculators for weight loss sites are often used to attract users.
* Social Media: Social media sites, such as Facebook, Twitter, and Digg, are becoming more popular by the minute. Adding applications for these social media sites gives you access to the power of this emerging online space.
More things to consider
1. Search engines want to see consistent growth in links over time as opposed to “one hit wonder” links.
2. Link to authoritative sources, such as leading professional organizations, government agencies, colleges and universities, and major media. Linking to anything and everything just to have a lot of links, not only won’t help, it may even hurt your rankings.
Linking is becoming more and more vital for making a website visible and credible to both search engines and human readers. In fact, if you could only do one thing to optimize your website for search, it should be souping up your links.
In this first part of “Hot Rod Linking,” we’ll talk about why linking is a critical part of your SEO efforts, and we’ll also give you some basic linking strategies to start with. And in the spirit of linking, we’ll give you some links to some of the most popular linking resources on the Web.
Why is linking so important in SEO?
Linking has become more significant for search engines because website design and SEO were being designed to “trick” search engines, even at the expense of usability. In addition, linking is a time-intensive and labor-intensive exercise for both quantity and quality linking.
Linking is what gives a website credibility in the eyes of not only users, but also the search engines for the same reason that citations and references are in term papers. More and better links mean that your site is more relevant and popular to searchers. For ranking, linking is as important as, if not more important than, the actual content of a site.
For example, if you search Google for the keyword phrase “children’s books”, you’ll get Random House ranked on page 1 position 3. The keyword “children’s books” isn’t even in the content and the landing page doesn’t have that keyword in important places such as the page title, description meta tag or keyword meta tag. What the Random House website does have is 1,130 inbound links from quality sources such as public libraries, literacy foundations, and special interest groups such as the Association of Booksellers for Children.
Basic linking strategies to hook users
To “hook” users and linking partners, here are some basic linking strategies:
* Content Development: As we mentioned elsewhere, users search to find answers to questions and solutions to problems. Some of the most popular web content includes “Top 10’s,” “Do’s and Don’ts” lists, “How Tos,” tests/quizzes, and FAQs. These items are popular because they offer answers and solutions.
* Link Bait: Humor, debate, news, incentives, ego, and contrarian positions “hook” users. When it comes to this strategy, a catchy headline, like “The Secret of…” or “What They Don’t Want You to Know About…” can be a big draw.
* Widgets and Tools: Specific widgets and tools that are relevant to your site, such as mortgage calculators for banks or body mass index calculators for weight loss sites are often used to attract users.
* Social Media: Social media sites, such as Facebook, Twitter, and Digg, are becoming more popular by the minute. Adding applications for these social media sites gives you access to the power of this emerging online space.
More things to consider
1. Search engines want to see consistent growth in links over time as opposed to “one hit wonder” links.
2. Link to authoritative sources, such as leading professional organizations, government agencies, colleges and universities, and major media. Linking to anything and everything just to have a lot of links, not only won’t help, it may even hurt your rankings.
Thursday, July 2, 2009
XP REPAIR INSTALL
1. Boot the computer using the XP CD. You may need to change the
boot order in the system BIOS. Check your system documentation
for steps to access the BIOS and change the boot order.
2. When you see the "Welcome To Setup" screen, you will see the
options below This portion of the Setup program prepares Microsoft
Windows XP to run on your computer:
To setup Windows XP now, press ENTER.
To repair a Windows XP installation using Recovery Console, press R.
To quit Setup without installing Windows XP, press F3.
3. Press Enter to start the Windows Setup.
do not choose "To repair a Windows XP installation using the
Recovery Console, press R", (you do not want to load Recovery
Console). I repeat, do not choose "To repair a Windows XP
installation using the Recovery Console, press R".
4. Accept the License Agreement and Windows will search for existing
Windows installations.
5. Select the XP installation you want to repair from the list and
press R to start the repair. If Repair is not one of the options,
read this Warning!!
6. Setup will copy the necessary files to the hard drive and reboot.
Do not press any key to boot from CD when the message appears.
Setup will continue as if it were doing a clean install, but your
applications and settings will remain intact.
Blaster worm warning: Do not immediately activate over the internet
when asked, enable the XP firewall
[ http://support.microsoft.com/?kbid=283673 ]
before connecting to the internet. You can activate after the
firewall is enabled. Control Panel - Network Connections. Right click
the connection you use, Properties, and there is a check box on the
Advanced [ http://michaelstevenstech.com/xpfirewall1.jpg ] page.
7. Reapply updates or service packs applied since initial Windows XP
installation. Please note that a Repair Install from the Original
install XP CD will remove SP1/SP2 and service packs will need to be
reapplied.
Service Pack 2
http://www.microsoft.com/downloads/details.aspx?FamilyId=049C9DBE-3B8E-
4F30-8245-9E368D3CDB5A&displaylang=en
An option I highly recommend is creating a Slipstreamed XP CD with SP2.
Slipstreaming Windows XP with Service Pack 2 (SP2)
http://www.winsupersite.com/showcase/windowsxp_sp2_slipstream.asp
______________________________________________________________________
Warning!!
If the option to Repair Install is not available and you continue
with the install;you will delete your Windows folder and Documents
and Settings folder. All applications that place keys in the registry
will need to be re-installed. You should exit setup if the repair
option is not available and consider other options.
Try the link below if the repair option is not available.
Windows XP Crashed?
http://www.digitalwebcast.com/2002/03_mar/tutorials/cw_boot_toot.htm
Here's Help.
A salvage mission into the depths of Windows XP, explained by a
non-geek
by Charlie White
http://www.digitalwebcast.com/2002/03_mar/tutorials/cw_boot_toot.htm
Related links
You May Lose Data or Program Settings After Reinstalling, Repairing,
or Upgrading Windows XP (Q312369)
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q312369
System Restore "Restore Points" Are Missing or Deleted (Q301224)
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q301224
How to Perform an In-Place Upgrade (Reinstallation) of Windows XP
(Q315341)
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q315341
Warning!! If the Repair Option is not Available
What should I do? Most important do not ignore the information below!
If the option to Repair Install is NOT available and you continue
with the install; you will delete your Windows folder, Documents and
Settings folders. All Applications that place keys in the registry
will need to be re-installed.
You should exit setup if the repair option is not available and
consider other options. I have found if the Repair option is not
available, XP is usually not repairable and will require a Clean
install.http://michaelstevenstech.com/cleanxpinstall.html
If you still have the ability to access the Windows XP installation,
backup all important files not restorable from other sources before
attempting any recovery console trouble shooting attempts.
Possible Fix by reconfiguring boot.ini using Recovery Console.
1.Boot with XP CD or 6 floppy boot disk set.
2. Press R to load the Recovery Console.
3. Type bootcfg.
4. This should fix any boot.ini errors causing setup not to see the
XP OS install.
5. Try the repair install.
One more suggestion from MVP Alex Nichol
"Reboot, this time taking the immediate R option, and if the CD
letter is say K: give these commands
COPY K:\i386\ntldr C:\
COPY K:\i386\ntdetect.com C:\
(two other files needed - just in case)
1. Type: ATTRIB -H -R -S C:\boot.ini DEL C:\boot.ini
2. Type: BootCfg /Rebuild
which will get rid of any damaged boot.ini, search the disk for
systems and make a new one. This might even result in a damaged
windows reappearing; but gives another chance of getting at the
repair"
Feedback on success or failure of the above fixes would be greatly
appreciated.
Feedback on success or failure of the above fix would be greatly
appreciated.
xpnews@michaelstevenstech.com
Michael Stevens MS-MVP XP
Publishing of this document without permission of the author is
forbidden.
4-29-2003
Revised 11-05-2004
boot order in the system BIOS. Check your system documentation
for steps to access the BIOS and change the boot order.
2. When you see the "Welcome To Setup" screen, you will see the
options below This portion of the Setup program prepares Microsoft
Windows XP to run on your computer:
To setup Windows XP now, press ENTER.
To repair a Windows XP installation using Recovery Console, press R.
To quit Setup without installing Windows XP, press F3.
3. Press Enter to start the Windows Setup.
do not choose "To repair a Windows XP installation using the
Recovery Console, press R", (you do not want to load Recovery
Console). I repeat, do not choose "To repair a Windows XP
installation using the Recovery Console, press R".
4. Accept the License Agreement and Windows will search for existing
Windows installations.
5. Select the XP installation you want to repair from the list and
press R to start the repair. If Repair is not one of the options,
read this Warning!!
6. Setup will copy the necessary files to the hard drive and reboot.
Do not press any key to boot from CD when the message appears.
Setup will continue as if it were doing a clean install, but your
applications and settings will remain intact.
Blaster worm warning: Do not immediately activate over the internet
when asked, enable the XP firewall
[ http://support.microsoft.com/?kbid=283673 ]
before connecting to the internet. You can activate after the
firewall is enabled. Control Panel - Network Connections. Right click
the connection you use, Properties, and there is a check box on the
Advanced [ http://michaelstevenstech.com/xpfirewall1.jpg ] page.
7. Reapply updates or service packs applied since initial Windows XP
installation. Please note that a Repair Install from the Original
install XP CD will remove SP1/SP2 and service packs will need to be
reapplied.
Service Pack 2
http://www.microsoft.com/downloads/details.aspx?FamilyId=049C9DBE-3B8E-
4F30-8245-9E368D3CDB5A&displaylang=en
An option I highly recommend is creating a Slipstreamed XP CD with SP2.
Slipstreaming Windows XP with Service Pack 2 (SP2)
http://www.winsupersite.com/showcase/windowsxp_sp2_slipstream.asp
______________________________________________________________________
Warning!!
If the option to Repair Install is not available and you continue
with the install;you will delete your Windows folder and Documents
and Settings folder. All applications that place keys in the registry
will need to be re-installed. You should exit setup if the repair
option is not available and consider other options.
Try the link below if the repair option is not available.
Windows XP Crashed?
http://www.digitalwebcast.com/2002/03_mar/tutorials/cw_boot_toot.htm
Here's Help.
A salvage mission into the depths of Windows XP, explained by a
non-geek
by Charlie White
http://www.digitalwebcast.com/2002/03_mar/tutorials/cw_boot_toot.htm
Related links
You May Lose Data or Program Settings After Reinstalling, Repairing,
or Upgrading Windows XP (Q312369)
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q312369
System Restore "Restore Points" Are Missing or Deleted (Q301224)
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q301224
How to Perform an In-Place Upgrade (Reinstallation) of Windows XP
(Q315341)
http://support.microsoft.com/search/preview.aspx?scid=kb;en-us;Q315341
Warning!! If the Repair Option is not Available
What should I do? Most important do not ignore the information below!
If the option to Repair Install is NOT available and you continue
with the install; you will delete your Windows folder, Documents and
Settings folders. All Applications that place keys in the registry
will need to be re-installed.
You should exit setup if the repair option is not available and
consider other options. I have found if the Repair option is not
available, XP is usually not repairable and will require a Clean
install.http://michaelstevenstech.com/cleanxpinstall.html
If you still have the ability to access the Windows XP installation,
backup all important files not restorable from other sources before
attempting any recovery console trouble shooting attempts.
Possible Fix by reconfiguring boot.ini using Recovery Console.
1.Boot with XP CD or 6 floppy boot disk set.
2. Press R to load the Recovery Console.
3. Type bootcfg.
4. This should fix any boot.ini errors causing setup not to see the
XP OS install.
5. Try the repair install.
One more suggestion from MVP Alex Nichol
"Reboot, this time taking the immediate R option, and if the CD
letter is say K: give these commands
COPY K:\i386\ntldr C:\
COPY K:\i386\ntdetect.com C:\
(two other files needed - just in case)
1. Type: ATTRIB -H -R -S C:\boot.ini DEL C:\boot.ini
2. Type: BootCfg /Rebuild
which will get rid of any damaged boot.ini, search the disk for
systems and make a new one. This might even result in a damaged
windows reappearing; but gives another chance of getting at the
repair"
Feedback on success or failure of the above fixes would be greatly
appreciated.
Feedback on success or failure of the above fix would be greatly
appreciated.
xpnews@michaelstevenstech.com
Michael Stevens MS-MVP XP
Publishing of this document without permission of the author is
forbidden.
4-29-2003
Revised 11-05-2004
Some Tips And Tricks For Your Windows XP
Some Tips And Tricks For Your Windows XP
STOP NOISE IN COPYING AUDIO CD
When using 3rd party burning software (eg, Nero Burning Rom) to copy audio CD,some noise may be heard at the end of each track. To prevent this,try the following method:
1. Enter System Properties\device manager
2. Select IDE ATA/ATAPI controllers
3. Double click on thee CD writer IDE channel
4. Select advance setting
5. Change the transfer mode to 'PIO Only'
6. Restart Computer
DISABLING THE 'UNSIGNED DRIVER' DIALOGS
This option wll disable the screen wich keeps popping up when you try to install 'digitally unsigned drivers'. Normally you can choose to continue the install anyways, but I have had situations where you cannot continue the install.. very annoying.. This is how to fix it:
Click Start - Run
then type: gpedit.msc
then hit enter.
Browse the folder tree to the following location:
User Configuration - Administrative Templates - System
now right-click Code signing for Device drivers and select Properties.
On the Settings tab, either select
- enable, and then select ignore from the appearing listbox..
- or click the disable option. Click apply and Ok and your set!
Alternatively especially for XP Home users:
Open "System" properties (Windows key + pause or Right click 'My Computer' - properties or Control Panel - System).On the Hardware tab click the "Driver Signing" button. In the dialogue that comes up choose "Ignore" to install the new driver anyway.
DMA MODE ON IDE DEVICES VIEWS
Just like Windows 2000, Windows XP still fails to set the DMA mode correctly for the IDE device designated as the slaves on the primary IDE and secondary IDE channels. Most CD-ROMS are capable of supporting DMA mode, but the default in XP is still PIO. Setting it to DMA won't make your CD-ROM faster, but it will consume less CPU cycles. Here's how:
1. Open the Device Manager. One way to do that is to right click on "My Computer", select the Hardware tab, and Select Device Manager.
2. Expand "IDE ATA/ATAPI Controllers" and double-click on "Primary IDE Channel"
3. Under the "Advanced Settings" tab, check the "Device 1" setting. More than likely, your current transfer mode is set to PIO.
4. Set it to "DMA if available".
Repeat the step for the "Secondary IDE Channel" if you have devices attached to it. Reboot.
RESTORING MEDIA PLAYER
To restore Windows Media Player insert the the XP CD into the CD drive (if it autostarts click exit). Open a command window and type the following :
rundll32.exe setupapi,InstallHinfSection InstallWMP7 132 c:\windows\inf\wmp.inf
RESTORING ACCESS TO CD ROM'S
If you removed CD Burning software, or for some other mystical reason, can not longer access your CD ROM's, in most cases following registry keys needs to be deleted: Locate and delete the UpperFilters and LowerFilters values under the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
DELETING THE INDEX.DAT
Del "C:\Documents and Settings\aeon\Local Settings\Temporary Internet Files\Content.IE5\index.dat"
CONTROL PANEL ON THE DESKTOP.
On The Desktop, Right Click Your Mouse Then Choose "New | Folder". Name The Folder As "ControlPanel. {21EC2020-3AEA-1069-A2DD-08002B30309D}" Without The "Quote Things. And Now You Can Access The Control Panel More Faster Then Before.
CHANGING INTERNET EXPLORER ICON NAME.
Open Registry Editor Then Go To : "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID". You Can See A Few Key Below It.
Now Go To This Key {871C5380-42A0-1069-A2EA-08002B30309D}, Double Click At The Default Value On The Right, Enter Whatever Name You Like.
REMOVING USERNAME IN THE STARTMENU
Open Registry Editor Then Go To : "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer".
On The Right, Make A New Entry With Right Click On Your Mouse Then Choose "New | DWORD Value" Change The Entry's Name Into "NoUserNameInStartMenu", Double Click In The New Entry And Fill The "Value Data" With "1". Press OK, Exit From The Registry Editor. Restart Your Computer.
INTERNET EXPLORER LIGHTING-FAST STARTUP.
Isn't it annoying when you want to go to a new website, or any other site but your homepage, and you have to wait for your 'home' to load? This tweak tells Internet Explorer to simply 'run', without loading any webpages. (If you use a 'blank' page, that is still a page, and slows access. Notice the 'about:blank' in the address bar. The blank html page must still be loaded..). To load IE with 'nothing' [nothing is different than blank]:
1. Right-click on any shortcut you have to IE
[You should create a shortcut out of your desktop IE icon, and delete the original icon]
2. Click Properties
3. Add ' -nohome' [with a space before the dash] after the endquotes in the Target field.
4. Click OK
Fire up IE from your modified shortcut, and be amazed by how fast you are able to use IE!
INTERNET EXPLORER SPEED UP.
Edit your link to start Internet Explorer to have -nohome after it. For Example: "C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome
This will load internet explorer very fast because it does not load a webpage while it is loading. If you want to go to your homepage after it is loaded, just click on the home button.
SPEED UP BROWSING WITH DNS CATCH.
when you connect to a web site your computer sends information back and forth, this is obvious. Some of this information deals with resolving the site name to an IP address, the stuff that tcp/ip really deals with, not words. This is DNS information and is used so that you will not need to ask for the site location each and every time you visit the site. Although WinXP and win2000 has a pretty efficient DNS cache, you can increase its overall performance by increasing its size. You can do this with the registry entries below:
************begin copy and paste***********
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters]
"CacheHashTableBucketSize"=dword:00000001
"CacheHashTableSize"=dword:00000180
"MaxCacheEntryTtlLimit"=dword:0000fa00
"MaxSOACacheEntryTtlLimit"=dword:0000012d
************end copy and paste***********
make a new text file and rename it to dnscache.reg. Then copy and paste the above into it and save it. Then merge it into the registry.
START IEXPLORER WITH EMPTY BLUE SCREEN.
Set your default page to about:mozilla and IE will show a nice blue screen upon startup.
SPEED UP DETAILED VIEW IN WINDOWS EXPLORER.
If you like to view your files in Windows Explorer using the "Details" view here is a tweak to speed up the listing of file attributes: Viewing files in Windows Explorer using the "Details" mode shows various attributes associated with each file shown. Some of these must be retrieved from the individual files when you click on the directory for viewing. For a directory with numerous and relatively large files (such as a folder in which one stores media, eg: *.mp3's, *.avi's etc.)
Windows Explorer lags as it reads through each one. Here's how to disable viewing of unwanted attributes and speed up file browsing:
1. Open Windows Explorer
2. Navigate to the folder which you wish to optimize.
3. In "Details" mode right click the bar at the top which displays the names of the attribute columns.
4. Uncheck any that are unwanted/unneeded.
Explorer will apply your preferences immediately, and longs lists of unnecessary attributes will not be displayed. Likewise, one may choose to display any information which is regarded as needed, getting more out of Explorer.
WEB PAGES SLOWS DOWN, FIX.
The tweak is simple. Beside the QoS and others around the Internet for the new XP OS, I found out that native drivers sometimes slow you down (cable and xDSL users). So if you have applied all tweaks and you are still having slow downs try reinstalling your NICs drivers. The difference is noticeable. My web pages now load almost instantly where they used to take even a minute!
FIX IE 6 SLOWDOWNS AND HANGS.
1. Open a command prompt window on the desktop (Start/Run/command).
2. Exit IE and Windows Explorer (iexplore.exe and explorer.exe, respectively, in Task Manager, i.e - Ctrl-Alt-Del/Task Manager/Processes/End Process for each).
3. Use the following command exactly from your command prompt window to delete the corrupt file:
C:\>del "%systemdrive%\Documents and Settings\%username%\Local
Settings\Temporary Internet Files\Content.IE5\index.dat"
4. Restart Windows Explorer with Task Manager (Ctrl-Alt-Del/Task Manager/Applications/New Task/Browse/C:\Windows\explorer.exe[or your path]) or Shutdown/Restart the computer from Task Manager.
SPEED UP WEB BROWSING.
Iv'e personally found a dramatic increase in web browsing after clearing the Windows XP DNS cache. To clear it type the following in a command prompt: ipconfig /flushdns.
ALLOW MORE THAN 2 SIMULTANEOUS DOWNLOADS ON IEXPLORER 6.
This is to increase the the number of max downloads to 10.
1. Start Registry Editor (Regedt32.exe).
2. Locate the following key in the registry:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
3. On the Edit menu, click Add Value , and then add the following registry values:
"MaxConnectionsPer1_0Server"=Dword:0000000a
"MaxConnectionsPerServer"=Dword:0000000a
4. Quit Registry Editor.
IPV6 INSTALLATION FOR WINDOWS XP.
This protocol is distined to replace the Internet Protocal Version 4 used by Internet Explorer it uses hexadecimal ip addresses instead of decimal example (decimal ip 62.98.231.67) (hexadecimal IP 2001:6b8:0:400::70c)
To install To install the IPv6 Protocol for Windows XP:
Log on to the computer running Windows XP with a user account that has local administrator privileges. Open a command prompt. From the Windows XP desktop, click Start, point to Programs, point to Accessories, and then click Command Prompt. At the command prompt, type: ipv6 install
For more information on IPv6, visit the site below:
CODE
http://www.microsoft.com/windowsxp/pro/techinfo/administration/ipv6/default.asp
ANOTHER WAY TO FIX IEXPLORER 6 SLOW PAGES LOADED.
Here's an easier way to get to index.dat file as addresse in another tweak submitted here.
1. click on Internet Explorer
2. go to to your root dir (usually C:)
3. open Documents and Settings folder
4. open "your username folder"
5. open UserData
6. **close IE if you have it open**
rename index.dat to index.old
logoff and log back on (don't need to restart) open up IE and go to a web page or site that always seemed to load slowly. It should load a lot more quickly now. NOTE. Always rename or backup .dat or other system files before deleting.
EASY WAY TO ADD THE ADMINISTRATOR USER TO THE WELCOME SCREEN.
Start the Registry Editor Go to:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon \ SpecialAccounts \ UserList \
Right-click an empty space in the right pane and select New > DWORD Value Name the new value Administrator. Double-click this new value, and enter 1 as it's Value data. Close the registry editor and restart.
DRIVE ICONS.
To set the icon of any drive (hard disk, cd rom or anything else) with a letter (C:\ etc.), run REGEDIT (Start -> Run -> regedit)
Navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
If one doesn't already exist, create a new KEY called "DriveIcons". Under this key, create a new key with the letter of your drive. I.e. C for your C:\ drive.
To change the icon for that drive, create a key inside that one called DefaultIcon and set the path of (Default) to the location of your icon
eg C\DefaultIcon\ then (Default) = D:\Documents\C Drive Icon.ico
To change the name of that drive, create a key in the drive letter one (eg C\) called DefaultLabel and set the (Default) to what you want the drive to be called. This is useful if you want to assign a long name to the floppy drive.
CHANGING OEM REGISTRATIONS.
Have you used someone's new Hewlet Packard with their OEM version of Windows XP? You've seen that HP has their own icon in the Start Menu, underneath Run, that goes to their Help Site. Now, you can have your icon that does anything you want (website, program, etc) and says anything you want. Basically, you are "branding" Windows XP (Home or Pro), great for if you are a computer builder and sell them, or you just want to make Windows XP your own. It involves Regedit.
1. Start up Notepad and creat a new registry file (*.reg) and copy and paste the following into it:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}]
@="YOUR COMPANY NAME"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\DefaultIcon]
@="YOUR ICON HERE"
00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,68,00,70,00,6c,00,69,00,\
6e,00,6b,00,2e,00,69,00,63,00,6f,00,00,00
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\InProcServer32]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,\
64,00,6f,00,63,00,76,00,77,00,2e,00,64,00,6c,00,6c,00,00,00
"ThreadingModel"="Apartment"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance]
"CLSID"="{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance\InitPropertyBag]
"CLSID"="{13709620-C279-11CE-A49E-444553540000}"
"method"="ShellExecute"
"Command"="YOUR TITLE HERE"
"Param1"="YOUR FUNCTION HERE"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex]
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\ContextMenuHandlers]
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\ContextMenuHandlers\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}]
@=""
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\MayChangeDefaultMenu]
@=""
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\ShellFolder]
"Attributes"=dword:00000000
2. Edit where it says YOUR ICON HERE to a path to an icon (ex. c:\\icon.ico), it must be 24x24 pixels and in *.ico format. Use double back slash for path names.
3. Edit both places where it says YOUR TITLE HERE to what you want it to say in the Start Menu (ex. Elranzer Homepage).
4. Edit where it says YOUR FUNCTION here to what you want it to do when you click it, it can be anything... your website, a local HTML document, a program, a Windows funtion, whatever your imagination can provide (ex. http://www.shareordie.com).
5. Save this file as brand.reg, double-click it to enterin your information, and refresh Explorer (log off/on) to see it in the Start Menu!! This works in both Home and Professional (and probably 64-Bit Professional) Editions!
ORIGINAL WALLPAPERS.
This is more of a fun tweak than it is useful. Go to run, type regedit press ok. when that comes up go to HKEY_CURRENT_USER>Control Panel>Desktop
Now find the orginalwallpaper, right click and select modify.In the text box type the path to the file you want to be your orginal desktop wallpaper.
DELETING My eBooks AND SPECIALS FOLDER IN MY DOCUMENTS.
Click Start, then Run and type: regsvr32 /u mydocs.dll
then delete them.
DISABLE WINDOWS PICTURE AND FAX VIEWER.
By default, Windows XP opens all picture files (gif,jpg,...) with the included Windows Picture and Fax Viewer no matter what other picture viewers you have installed. To disable the Windows Picture and Fax Viewer, unregister shimgvw.dll. This can be done from command prompt: regsvr32 /u shimgvw.dll
REMOVE PAST ITEMS ICONS IN TASKBAR.
Some times When you check your TasKbar properties or when you hide or unhide icons you can see old icons from Uninstalled or old programs you dont have anymore. This Tweak will help you how to get rid of this problem Thanks to leobull of Xperience.or How To clear the Past Items or Icons list in the TaskBar, perform the following steps:
1.Open Regedit Navigate to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\TrayNotify
2.Delete the IconStreams and PastIconsStream values
3.Open Task Manager, click the Processes tab, click Explorer.exe , and then click End Process .
4.In Task Manager, click File , click New Task , type explorer , and then click OK .
LOCKING COMPUTERS.
To lock a computer in XP, as you probably know, you press "L" while holding down "Windows Logo" key on your keyboard. However, if you would like to lock a computer remotely, for example via "Remote Administrator", you don't have this ability. What you can do instead, is to create a shortcut on remote computer's desktop where Target %windir%\System32\rundll32.exe user32.dll,LockWorkStation Start In %windir%
ADMINISTRATOR IN WELCOME SCREEN.
When you install Windows XP an Administrator Account is created (you are asked to supply an administrator password), but the "Welcome Screen" does not give you the option to log on as Administrator unless you boot up in Safe Mode.
First you must ensure that the Administrator Account is enabled:
1 open Control Panel
2 open Administrative Tools
3 open Local Security Policy
4 expand Local Policies
5 click on Security Options
6 ensure that Accounts: Administrator account status is enabled Then follow the instructions from the "Win2000 Logon Screen Tweak" ie.
1 open Control Panel
2 open User Accounts
3 click Change the way users log on or log off
4 untick Use the Welcome Screen
5 click Apply Options
You will now be able to log on to Windows XP as Administrator in Normal Mode.
BUGFIXES.
This is a strange bug in Windows XP Pro but it can and does happen to everyone. When you open the My Computer screen and your Documents folder is missing but all the other users folders are there try this tweak.
STEP 1:
START > RUN > REGEDIT > HKEY_LOCAL_MACHINE / Software / Microsoft / Windows / Current Version / Explorer / DocFolderPaths
Once you click the DocFolderPaths folder you should see all the user's folders.
STEP 2:
Add a new string value
Value Name: your user name
Value Data: the path to your docs folder ( ex. C:\Documents and Settings\your docs folder )
Exit Registry editor and open my computer, your docs folder should now be visable.
MOUSE POINTERS.
It seems that even without pointer precision disabled, the mouse under XP is still influenced by an acceleration curve. This is especially noticeable in games. To
completely remove mouse acceleration from XP, you will need to go into the registry and adjust the SmoothmouseXYCurve values. Here is how its done.
1. Click Start button
2. Select Run
3. Type 'regedit' in the open textbox
4. Open the tree 'HKEY_CURRENT_USER', select control panel, then select mouse
5. Right clicking, modify the SmoothMouseXCurve and SmoothMouseYCurve hexidecimal values to the following:
SmoothMouseXCurve:
00,00,00,00,00,00,00,00
00,a0,00,00,00,00,00,00
00,40,01,00,00,00,00,00
00,80,02,00,00,00,00,00
00,00,05,00,00,00,00,00
SmoothMouseYCurve:
00,00,00,00,00,00,00,00
66,a6,02,00,00,00,00,00
cd,4c,05,00,00,00,00,00
a0,99,0a,00,00,00,00,00
38,33,15,00,00,00,00,00
If done correctly, you will notice you are holding a markedly more responsive mouse.
HIDDEN WINDOWS XP ICONS.
Windows XP Pro and Home contains icons for folders and files that cannot normally be seen, you can select to view hidden files from the folder options menu, but there are still some that remain hidden.
You can set windows to view these files as normal hidden files, so that when you use the view hidden files and folders toggle from the folder options menu that these will be turned on/off along with the normal hidden files.
These files are usually system files and should not be altered/deleted unless you really know what you are doing, if you don't yet still wish to change them I might suggest that you create back-ups of your system first.
I will personally accept no responsibility for any damage caused by using this tweak. To view the hidden files you need to open up regedit, if you are not sure how to do this, select run from the start menu and type in 'regedit' without the apostrophe's. In the regedit window, expand out the groups by clicking on the '+' next to the name in the left hand column of regedit, and navigate to the below address.
HKEY_CURRENT_USER \SOFTWARE \MICROSOFT \WINDOWS \CURRENTVERSION \EXPLORER \ADVANCED
when you have clicked the advanced folder on the left pane, look down the list at the titles in the right hand pane, one of those titles is 'ShowSuperHidden'
double click the title and in the window that appears set the value to equal 1 to show the super hidden files and 0 to hide them.
XP HOME ADVANCED FILE PERMISSIONS.
This is actually an addition to my previous post entitled "Get XP Pro file security with XP Home". In the aforementioned post I outlined how to access
*Advance file Permissions* on NTFS file systems for XP Home simply by booting into *Safe Mode*, rt-clicking any file or folder, and navigating to the *Security tab*. This gives the user the ability to allow or deny read, write, execute, read & write, display contents, full-control, iheritance, and take ownership permissions, with many more options available to apply to different users and groups stored on the computer. Well, you don't have to do this in *Safe Mode* (XP Home). Although it is a little less intuitive, you can simply go to your command prompt - Start>All Programs>Accessories>Command Prompt. Now type "cacls" in the window (without the quotes). This gives you the ability to add, remove or modify file permissions on files and folders through the command prompt. Type "cacls /?" for help on different options and variables. You do not need to be in safe mode to use this so it makes it a little quicker than using the safe mode security tab GUI. Remember - this only applies to NTFS. Here also is a very useful link to find a lot of extras and tweaks straight from the horse's mouth - the Microsoft Resource Center. You will find a lot of very useful web-based extra's here, most of them left unknowing to the general public - such as, "Online Crash Analysis" - a site that looks like Windows Update but you can upload your crash "dump logs" (when you get those system or application crash error reports). Microsoft will then analyze the log file and tell you some more info about WHY the system crashed (ie. faulty hardware/software/conflicts, etc).
FLASHGET :BYPASSING 8 MAX SIMULTANEOUS JOBS.
Users of Flash get will notice that the maximum number of file splits is 8. This number can be increased by the tweak below:
1. Run regedit.
2. Navigate to [HKEY_CURRENT_USER\Software\JetCar\JetCar\General\]
3. Right Click -> Add String Value.
4. Name as MaxSimJobs -> Set the value as what ever number you want.
After a restart you should be able to download with more file splits.
OUTLOOK EXPRESS WINDOWS TITLE TWEAKS.
Change the window title of Outlook Express to anything you want!
In regedt32 and navigate to HKEY_CURRENT_USER\Identities\{EE383506-901D-43C6-8E40-9A61901DF7CC}\Software\Microsoft\Outlook Express\5.0. Add a new string key called WindowTitle and make its value the desired window title. Then close the registry editor, and restart Outlook Express (if it's running.) Your new title now shows up in the title bar!
WINDOWS MEDIA PLAYER 9.
When installing WMP 9 it leaves a watersign on your desktop. You can easily remove this with: regedit:
HKey_Local_Machine\SOFTWARE\microsoft\system certificates\CA\certificates\FEE449EE0E3965A5246F00E87FDE2A065FD89D4
HKey_Local_Machine\software\microsoft\system certificates\ROOT\certificates\2BD63D28D7BCD0E251195AEB519243C13142EBC3
Remove both lines and restart computer.
CHANGING THE WINDOWS MEDIA PLAYER TITLEBAR.
This is a per-user tweak. Open RegEdit.
Browse to the following key:
HKEY_USERS\S-1-5-21-xxxxxxxxx-xxxxxxxxx-xxxxxxxxxx-xxxx\Software\Policies\Microsoft\WindowsMediaPlayer
(the x's will vary from computer to computer , it's the key without the "_Classes" at the end) Create the following String, "TitleBar" , the value of this will now become the TitleBar of Windows Media Player.
AUTO DELETE TEMPORARY FOLDER.
First go into gpedit.msc
Next select -> Computer Configuration/Administrative Templates/Windows Components/Terminal Services/Temporary Folder
Then right click "Do Not Delete Temp Folder Upon Exit"
Go to properties and hit disable. Now next time Windows puts a temp file in that folder it will automatically delete it when its done! Note from Forum Admin: Remember, GPEDIT (Group Policy Editor) is only available in XP Pro.
CLEANUP STARTUP ITEMS IN MSCONFIG.
Do you ever uninstall programs and they are still listed under startup items in msconfig? Personally, I found myself with 30 such items from old installs. Microsoft leaves you no way to clean up this list, but have no fear, I have figured it out for you.
1. Open MSconfig and click on the startup items tab
2. Open Regedit and naviate to HKLM/Software/Microsoft/Sharedtools/MSconfig/startupreg
3. Compare the list of registry keys under startup reg with their counterparts in msconfig.
4. Delete the keys which are no longer valid.
5. Voila! You've cleaned up msconfig.
REMOVING SERVICES DEPENDENCIES.
This will allow you to disable a service or uninstall it from your system without effecting another service that depends on it. Here's how you do it
1. After you have set your services the way you want them and you have disabled/uninstalled something that another services depends on, run "regedit"
2. Under HKEY_LOCAL_MACHINE\System\find the service that will not function, do to another service being disabled/uninstall (found in ControlSet001\Services, ControlSet002\Services, and CurrentControlSet\Services)
3. Once you have found the service right-click on the string value, "DependOnService,"and modify
4. You should now see a list of services that it is dependent on. Simply delete the service that you have disabled/uninstalled
5. Restart your computer and your ready to go Disclaimer REMEMBER TO BACKUP YOU REGISTRY FIRST I'm not totaly sure if this will have any negative effects on your system. I used this method after uninstalling "Netbios over Tcpip" from my system completely, so that my Dhcp service would function and I have had NO negative effects on my system.
ANOTHER WAY TO DELETE HIDDEN DEVICES.
You can view and delete or modify hidden devices by:
1. Openning Device Manager. (I usually right-click on My Computer, select Properties, select the Hardware tab, then select Device Manager.)
2. Select View and check "Show hidden devices"
3. Hidden devices will appear below with the others and can be modified.
HOW TO GET "My Briefcase" IN WINDOWS XP.
go to C:\WINDOWS\system32\dllcache. look for a file named "syncapp".
double click it. an icon should appear on your desktop that says "My Briefcase". double click it. it will come up with this window that tells you how to use it.
TURN NUMLOCK ON AT LOGON.
NumLock does not toggle on by default (system-wide), even if you have it set in your PC's BIOS, because of XP's multi-user functionality. Guess Microsoft doesn't know everyone actually turns it on, which should be reason enough for what acts as "default"...
Anyway, you can hack the Windows Registry to change this behavior, or run a script at logon to turn NumLock on.
1. To enable NumLock through the Registry:
* Open Windows' Registry Editor (START > RUN, type "REGEDIT").
*. Navigate to HKEY_USERS\.Default\Control Panel\Keyboard.
*. Change the value for InitialKeyboardIndicators from 0 to 2.
2. To enable NumLock using a script, see this MS Knowledgebase article for complete instructions:
CODE
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q262625
Option 1 is the quicker method, but if you have more than one user on your system and one or more don't want NumLock on (stranger things have been known of), then option 2 is the way to go since it allows you to only attach the script to specific users.
FREE DISK SPACE BY DELETING RESTORE POINTS.
Start button-all programs-accessories-system tools-cleanup-more options. You will have the option of deleting your restore points.When your done creat one
restore point as a back up.
HOW TO REAL GET RID OF UNNECESSARY SOFTWARE
to uninstall things like msn messenger and other hidden installs thru add remove programs, do this: find sysoc.inf (you might have to enable "show hidden files" and "show hidden/protected system folders" in explorer) and open it in notepad replace all ",hide" with "," (both with out quotes) which is easiest to do with the replace all command under edit then in add/remove programs under add/remove windows compnents and whole new list of things to uninstall and add are now listed (such as internet explorer)
HAVING PROGRAMS RUN WHEN WINDOWS LOADS SLOWS DOWN YOUR STARTUP.
There are two ways do disable programs that may be in your startup (like icq, messanger,) The easiest is to do the following:
1. start --> run --> msconfig
2. Click on the "startup" tab (furthest right)\
3. Unclick any items you don't want to load when windows starts.
The second is by deleting registry entrys, this can be done the following way:
1. Start --> run --> regedit
2. Navigate to : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
3. Delete any entry's that you don't want to load up
TURN OFF INDEXING TO SPEED UP XP.
Windows XP keeps a record of all files on the hard disk so when you do a search on the hard drive it is faster. There is a downside to this and because the computer has to index all files, it will slow down normal file commands like open, close, etc. If you do not do a whole lot of searches on your hard drive then I suggest turnning this feature off:
1. Control Panel
2. Administrative Tools
3. Services
4. Disable Indexing Services
HALF LIFE AND WINDOWS XP.
1. How to recover from incompatible drivers
Before you install new drivers set a system restore point. Start>All programs>Accessories>system tools>system restore
After your new drivers don't work reset your computer. Press F8 repeatedly as soon as the BIOS screen disappears, and before the Windows XP screen appears. Select safe mode. Use system restore again to undo your mess.
2. Video Drivers
The NVidia drivers that come with XP do not allow you to run Half Life in OpenGL. Update to the newest drivers.
Despite the fact that they are not official drivers, 22.50 was the only set which worked
3. Sound Drivers
Use windows update to update Creative drivers.
4. Fixing screen flicker
Windows XP defaults to 60Hz for games. A fix is available here:
CODE
http://www.fileplanet.com/dl/dl.asp?/planetquake/ztn/nvreffix-setup.exe
Select "set: ev ery resolution to monitor's maximum supported rate"
5. Fixing lag
If you are having trouble with lag, try disabling the windows XP firewall. Go to control panel>network connections. Select connection, right click, properties, advanced, untick the firewall.
6. Mouse
You can improve your mouse smoothness for games.
Control panel>mouse>hardware>properties>advanced
Change the sample rate to a higher one, eg. 200
REGISTRY METHOD FOR REMOVING STARTUP ITEMS.
I prefer to use MSCONFIG selective startup to troubleshoot. To remove entries for good, open the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RUN and HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RUN
Delete entries of unwanted startup daemons and tray procedures.
DISPLAY MESSAGE ON STARTUP.
Start regedit, if you are unfamiliar with regedit please see our FAQ.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Modify the key legalnoticecaption with what you want to name the window.
Modify the key legalnoticetext with what you want the window to say. Restart.
REMOVE THE DEFAULT IMAGE VIEWER IN WINDOWS ME/XP.
This tweak works in Windows Me/XP, I have not try it in Windows NT/2000 yet, because i don't have that OS, you can try it if you have.
*This tweak does not work in Windows 95/98
To remove the Windows default Image Viewer, first:
Click Start Menu
Select Run menu
Type "cmd", (for Windows Me, type "command")
Then type "regsvr32 /u shimgvw.dll" to unregister this dll. This will stop it from previewing any picture that it support, e.g. JPEG, Bitmap, GIF....
* Before perform this tweak, make sure that you have the alternative Image Viewer installed in you windows e.g. ACDsee, FireGraphics... because once you do this tweak without that application, you can't open and view your image anymore! So, to undo it, type "regsvr32 shimgvw.dll" in command prompt.
SPEED UP BOOT BY DISABLING UNUSED PORTS.
You may have tried many tweaks like modifying windowsXP start-up applications, prefetches, unload DLLs method,etc. And yes those methods do work for me.
I have just accidentally found out another way to give you an extra boost in windowsXP's boot performance. This is done by disabling your unused devices in
Device Manager. for example, if you don't have input devices that are connected to one of your USBs or COM ports, disabling them will give you an extra perfromance boost in booting. Go to Control Panel -> System -> Hardware tab -> device manager Disable devices that you don't use for your PC and then restart.
CLEAR UNWANTED ENTRIES FROM ADD/REMOVE PROGRAMS.
Run the Registry Editor (REGEDIT).
Open HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ Uninstall Remove any unwanted keys under "Uninstall."
CLICKING * .AVI FILES ON EXPLORER CAUSING 100% CPU USAGE.
Well windows seem to have a REALLY big problem when it comes to reading AVI files. It seems that when you click on an AVI file in explorer, it'll try to read the entire AVI file to determine the width,height, etc. of the AVI file (this is displayed in the Properties window). Now the problem with Windows is that if you have a broken/not fully downloaded AVI file that doesnt contain this info, Windows will scan the entire AVI file trying to figure out all these properties which in the process will probably cause 100% CPU usage and heavy memory usage. To solve this problem all you have to do is the following:
1. Open up regedit
2. Goto HKEY_CLASSES_ROOT\SystemFileAssociations\.avi\shellex\PropertyHandler
3. Delete the "Default" value which should be "{87D62D94-71B3-4b9a-9489-5FE6850DC73E}"
Voila! Please not that this will no longer provide you with the windows properties displaying the AVI file information such as width, height, bitrate etc. But its a small price to pay for saving you resources.
NOTE: Please use caution when using regedit. Improper usage may cause windows to behave imcorrectly. Also, I cannot be held resposible. Backup your registry first.
CD ROM STOPS AUTOPLAYING/AUTORUN.
And the AutoPlay Tab has disappeared in My Computer, Devices With Removable Storage, Right Click on CDROM, Properties.
Solution: The service: "Shell Hardware Detection" has been set to Manual or Disabled. Go to Control Panel, Administrative Tools, Services. Return this service to "Automatic".
SHUTDOWN XP FASTER 1.
Like previous versions of windows, it takes long time to restart or shutdown windows xp when the "Exit Windows" sound is enabled. to solve this problem you
must disable this useless sound. click start button then go to settings -> control panel -> Sound,Speech and Audio devices -> Sounds and Audio Devices -> Sounds, then under program events and windows menu click on "Exit Windows" sub-menu and highlight it.now from sounds you can select,choose "none" and then click apply and ok. now you can see some improvements when shutting down your system.
SHUTDOWN XP FASTER 2.
Start Regedit.
Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control.
Click on the "Control" Folder.
Select "WaitToKillServiceTimeout"
Right click on it and select Modify.
Set it a value lower than 2000 (Mine is set to 200).
EASIEST WAY TO DELETE PREFETCH.
1. Open notepad.exe, type del c:\windows\prefetch\*.* /q (without the quotes) & save as "delprefetch.bat" in c:\
2. From the Start menu, select "Run..." & type "gpedit.msc".
3. Double click "Windows Settings" under "Computer Configuration" and double click again on "Startup" in the right window.
4. In the new window, click "add", "Browse", locate your "delprefetch.bat" file & click "Open".
5. Click "OK", "Apply" & "OK" once again to exit.
6. Reboot your computer.
SPEED UP MENU DISPLAY.
When using the start menu the you will notice a delay between different tiers of the menu hierarchy. For the fastest computer experience possible I recommend changing this value to zero. This will allow the different tiers to appear instantly. Start Regedit. If you are unfamiliar with regedit please refer to our FAQ on how to get started.
Navigate to HKEY_CURRENT_USER\Control Panel\Desktop
Select MenuShowDelay from the list on the right.
Right on it and select Modify.
Change the value to 0.
Reboot your computer.
16 COLOUR ICONS.
If you select 16bit mode for graphics your icons will revert to using 8bit (16 color) icons. Yuck! Change the following registry setting to:
[HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics] "Shell Icon BPP"="16" "Shell Icon Size"="32" Setting the BPP to 16bit will yield 65565 colors for icons.
DE-CRYPT ENCRYPTED FILES ON WINDOWS XP.
1. Login as Administrator
2. Go to Start/Run and type in cmd and click OK.
At the prompt type cipher /r:Eagent and press enter
This prompt will then display:
Please type in the password to protect your .PFX file:
Type in your Administrator password
Re-confirm your Administrator password
The prompt will then display
Your .CER file was created successfully.
Your .PFX file was created successfully.
The Eagent.cer and Eagent.pfx files will be saved in the current directory that is shown at the command prompt. Example: The command prompt displays
C:\Documents and Settings\admin> the two files are saved in the admin folder. (For security concerns, you should house the two files in your Administrator folder or on a floppy disk).
3. Go to Start/Run and type in certmgr.msc and click OK. This will launch the Certificates Manager. Navigate to Personal and right click on the folder and select All Tasks/Import. The Certificate Import Wizard will appear. Click Next. Browse to the C:\Documents and Settings\admin folder. In the Open dialog box, change the Files of Type (at the bottom) to personal Information Exchange (*.pfx,*.P12). Select the file Eagent.pfx and click Open. Click Next. Type in your Administrator password (leave the two checkboxes blank) and click Next. Make sure the Radio button is active for the first option (Automatically select the certificate store based on the type of certifcate). Click Next. Click Finish. (You'll receive a message that the import was successful). To confirm the import, close Certificates Manager and re-open it. Expand the Personal folder and you will see a new subfolder labeled Certificates. Expand that folder and you will see the new entry in the right side column. Close Certificate Manager.
4. Go to Start/Run and type in secpol.msc and click OK. This will launch the Local Security Policy. Expand the Public Key Policies folder and then right click on the Encrypted File System subfolder and select Add Data Recovery Agent... The Wizard will then display. Click Next. Click the Browse Folders... button. Browse to the C:\Documents and Settings\admin folder. Select the Eagent.cer file and click Open. (The wizard will display the status User_Unknown. That's ok). Click Next. Click Finish. You will see a new entry in the right side column. Close the Local Security Policy.
You, the Administrator are now configured as the default Recovery Agent for All Encrypted files on the Local Machine.
To Recover Encrypted files: Scenario #1
If you have completed the above steps BEFORE an existing user encrypted his/her files, you can log in to your Administrator account and navigate to the encrypted file(s). Double click on the file(s) to view the contents.
Scenario #2
If you have completed the above steps AFTER an existing user has already encrypted his/her files, you must login to the applicable User's User Account and then immediately logout. Next, login to your Administrator account and navigate to the encrypted file(s). Double click on the file(s) to view the contents.
*Warning Do not Delete or Rename a User's account from which will want to Recover the Encrypted Files. You will not be able to de-crypt the files using the steps outlined above.
DUMP FILES TWEAK & DISABLE DR.WATSON.
"Dump file. A dump file stores data from memory during a system crash and can be helpful when diagnosing problems, but like a swap file, it can also expose a lot of sensitive, unencrypted data. To prevent Windows from creating the file, go to Control Panel | System. Click on the Advanced tab and then the Settings button on the Startup and Recovery pane. Set the drop-down menu under Write debugging information to (none). "Similarly, the debugging program Dr. Watson saves information when applications crash. To disable it, go to:
HKEY_local_machine\software\Microsoft\WindowsNT\CurrentVersion\ AeDebug and set the Auto string to 0. Then use Windows Explorer to go to Documents and Settings\All Users\Shared Documents\DrWatson. Delete User.dmp and Drwtsn32.log, the insecure logs the program creates." Heed related advice from 'microsoft' regarding 'Disable Dr.Watson' first before the preceding Dr. Watson advice (go Google search.) Back up with System Restore, and go ahead. As cautious as I am, I have gladly applied these tweaks, and followed related microsot advice on Dr. Watson.
Precaution: Backups All Of Your Data Before Tweaking, Not All Of The Tips I've Mentioned Above Were Tested. I Don't Responsible For Any Damages. Happy Experiments
STOP NOISE IN COPYING AUDIO CD
When using 3rd party burning software (eg, Nero Burning Rom) to copy audio CD,some noise may be heard at the end of each track. To prevent this,try the following method:
1. Enter System Properties\device manager
2. Select IDE ATA/ATAPI controllers
3. Double click on thee CD writer IDE channel
4. Select advance setting
5. Change the transfer mode to 'PIO Only'
6. Restart Computer
DISABLING THE 'UNSIGNED DRIVER' DIALOGS
This option wll disable the screen wich keeps popping up when you try to install 'digitally unsigned drivers'. Normally you can choose to continue the install anyways, but I have had situations where you cannot continue the install.. very annoying.. This is how to fix it:
Click Start - Run
then type: gpedit.msc
then hit enter.
Browse the folder tree to the following location:
User Configuration - Administrative Templates - System
now right-click Code signing for Device drivers and select Properties.
On the Settings tab, either select
- enable, and then select ignore from the appearing listbox..
- or click the disable option. Click apply and Ok and your set!
Alternatively especially for XP Home users:
Open "System" properties (Windows key + pause or Right click 'My Computer' - properties or Control Panel - System).On the Hardware tab click the "Driver Signing" button. In the dialogue that comes up choose "Ignore" to install the new driver anyway.
DMA MODE ON IDE DEVICES VIEWS
Just like Windows 2000, Windows XP still fails to set the DMA mode correctly for the IDE device designated as the slaves on the primary IDE and secondary IDE channels. Most CD-ROMS are capable of supporting DMA mode, but the default in XP is still PIO. Setting it to DMA won't make your CD-ROM faster, but it will consume less CPU cycles. Here's how:
1. Open the Device Manager. One way to do that is to right click on "My Computer", select the Hardware tab, and Select Device Manager.
2. Expand "IDE ATA/ATAPI Controllers" and double-click on "Primary IDE Channel"
3. Under the "Advanced Settings" tab, check the "Device 1" setting. More than likely, your current transfer mode is set to PIO.
4. Set it to "DMA if available".
Repeat the step for the "Secondary IDE Channel" if you have devices attached to it. Reboot.
RESTORING MEDIA PLAYER
To restore Windows Media Player insert the the XP CD into the CD drive (if it autostarts click exit). Open a command window and type the following :
rundll32.exe setupapi,InstallHinfSection InstallWMP7 132 c:\windows\inf\wmp.inf
RESTORING ACCESS TO CD ROM'S
If you removed CD Burning software, or for some other mystical reason, can not longer access your CD ROM's, in most cases following registry keys needs to be deleted: Locate and delete the UpperFilters and LowerFilters values under the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
DELETING THE INDEX.DAT
Del "C:\Documents and Settings\aeon\Local Settings\Temporary Internet Files\Content.IE5\index.dat"
CONTROL PANEL ON THE DESKTOP.
On The Desktop, Right Click Your Mouse Then Choose "New | Folder". Name The Folder As "ControlPanel. {21EC2020-3AEA-1069-A2DD-08002B30309D}" Without The "Quote Things. And Now You Can Access The Control Panel More Faster Then Before.
CHANGING INTERNET EXPLORER ICON NAME.
Open Registry Editor Then Go To : "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID". You Can See A Few Key Below It.
Now Go To This Key {871C5380-42A0-1069-A2EA-08002B30309D}, Double Click At The Default Value On The Right, Enter Whatever Name You Like.
REMOVING USERNAME IN THE STARTMENU
Open Registry Editor Then Go To : "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer".
On The Right, Make A New Entry With Right Click On Your Mouse Then Choose "New | DWORD Value" Change The Entry's Name Into "NoUserNameInStartMenu", Double Click In The New Entry And Fill The "Value Data" With "1". Press OK, Exit From The Registry Editor. Restart Your Computer.
INTERNET EXPLORER LIGHTING-FAST STARTUP.
Isn't it annoying when you want to go to a new website, or any other site but your homepage, and you have to wait for your 'home' to load? This tweak tells Internet Explorer to simply 'run', without loading any webpages. (If you use a 'blank' page, that is still a page, and slows access. Notice the 'about:blank' in the address bar. The blank html page must still be loaded..). To load IE with 'nothing' [nothing is different than blank]:
1. Right-click on any shortcut you have to IE
[You should create a shortcut out of your desktop IE icon, and delete the original icon]
2. Click Properties
3. Add ' -nohome' [with a space before the dash] after the endquotes in the Target field.
4. Click OK
Fire up IE from your modified shortcut, and be amazed by how fast you are able to use IE!
INTERNET EXPLORER SPEED UP.
Edit your link to start Internet Explorer to have -nohome after it. For Example: "C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome
This will load internet explorer very fast because it does not load a webpage while it is loading. If you want to go to your homepage after it is loaded, just click on the home button.
SPEED UP BROWSING WITH DNS CATCH.
when you connect to a web site your computer sends information back and forth, this is obvious. Some of this information deals with resolving the site name to an IP address, the stuff that tcp/ip really deals with, not words. This is DNS information and is used so that you will not need to ask for the site location each and every time you visit the site. Although WinXP and win2000 has a pretty efficient DNS cache, you can increase its overall performance by increasing its size. You can do this with the registry entries below:
************begin copy and paste***********
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters]
"CacheHashTableBucketSize"=dword:00000001
"CacheHashTableSize"=dword:00000180
"MaxCacheEntryTtlLimit"=dword:0000fa00
"MaxSOACacheEntryTtlLimit"=dword:0000012d
************end copy and paste***********
make a new text file and rename it to dnscache.reg. Then copy and paste the above into it and save it. Then merge it into the registry.
START IEXPLORER WITH EMPTY BLUE SCREEN.
Set your default page to about:mozilla and IE will show a nice blue screen upon startup.
SPEED UP DETAILED VIEW IN WINDOWS EXPLORER.
If you like to view your files in Windows Explorer using the "Details" view here is a tweak to speed up the listing of file attributes: Viewing files in Windows Explorer using the "Details" mode shows various attributes associated with each file shown. Some of these must be retrieved from the individual files when you click on the directory for viewing. For a directory with numerous and relatively large files (such as a folder in which one stores media, eg: *.mp3's, *.avi's etc.)
Windows Explorer lags as it reads through each one. Here's how to disable viewing of unwanted attributes and speed up file browsing:
1. Open Windows Explorer
2. Navigate to the folder which you wish to optimize.
3. In "Details" mode right click the bar at the top which displays the names of the attribute columns.
4. Uncheck any that are unwanted/unneeded.
Explorer will apply your preferences immediately, and longs lists of unnecessary attributes will not be displayed. Likewise, one may choose to display any information which is regarded as needed, getting more out of Explorer.
WEB PAGES SLOWS DOWN, FIX.
The tweak is simple. Beside the QoS and others around the Internet for the new XP OS, I found out that native drivers sometimes slow you down (cable and xDSL users). So if you have applied all tweaks and you are still having slow downs try reinstalling your NICs drivers. The difference is noticeable. My web pages now load almost instantly where they used to take even a minute!
FIX IE 6 SLOWDOWNS AND HANGS.
1. Open a command prompt window on the desktop (Start/Run/command).
2. Exit IE and Windows Explorer (iexplore.exe and explorer.exe, respectively, in Task Manager, i.e - Ctrl-Alt-Del/Task Manager/Processes/End Process for each).
3. Use the following command exactly from your command prompt window to delete the corrupt file:
C:\>del "%systemdrive%\Documents and Settings\%username%\Local
Settings\Temporary Internet Files\Content.IE5\index.dat"
4. Restart Windows Explorer with Task Manager (Ctrl-Alt-Del/Task Manager/Applications/New Task/Browse/C:\Windows\explorer.exe[or your path]) or Shutdown/Restart the computer from Task Manager.
SPEED UP WEB BROWSING.
Iv'e personally found a dramatic increase in web browsing after clearing the Windows XP DNS cache. To clear it type the following in a command prompt: ipconfig /flushdns.
ALLOW MORE THAN 2 SIMULTANEOUS DOWNLOADS ON IEXPLORER 6.
This is to increase the the number of max downloads to 10.
1. Start Registry Editor (Regedt32.exe).
2. Locate the following key in the registry:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
3. On the Edit menu, click Add Value , and then add the following registry values:
"MaxConnectionsPer1_0Server"=Dword:0000000a
"MaxConnectionsPerServer"=Dword:0000000a
4. Quit Registry Editor.
IPV6 INSTALLATION FOR WINDOWS XP.
This protocol is distined to replace the Internet Protocal Version 4 used by Internet Explorer it uses hexadecimal ip addresses instead of decimal example (decimal ip 62.98.231.67) (hexadecimal IP 2001:6b8:0:400::70c)
To install To install the IPv6 Protocol for Windows XP:
Log on to the computer running Windows XP with a user account that has local administrator privileges. Open a command prompt. From the Windows XP desktop, click Start, point to Programs, point to Accessories, and then click Command Prompt. At the command prompt, type: ipv6 install
For more information on IPv6, visit the site below:
CODE
http://www.microsoft.com/windowsxp/pro/techinfo/administration/ipv6/default.asp
ANOTHER WAY TO FIX IEXPLORER 6 SLOW PAGES LOADED.
Here's an easier way to get to index.dat file as addresse in another tweak submitted here.
1. click on Internet Explorer
2. go to to your root dir (usually C:)
3. open Documents and Settings folder
4. open "your username folder"
5. open UserData
6. **close IE if you have it open**
rename index.dat to index.old
logoff and log back on (don't need to restart) open up IE and go to a web page or site that always seemed to load slowly. It should load a lot more quickly now. NOTE. Always rename or backup .dat or other system files before deleting.
EASY WAY TO ADD THE ADMINISTRATOR USER TO THE WELCOME SCREEN.
Start the Registry Editor Go to:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon \ SpecialAccounts \ UserList \
Right-click an empty space in the right pane and select New > DWORD Value Name the new value Administrator. Double-click this new value, and enter 1 as it's Value data. Close the registry editor and restart.
DRIVE ICONS.
To set the icon of any drive (hard disk, cd rom or anything else) with a letter (C:\ etc.), run REGEDIT (Start -> Run -> regedit)
Navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
If one doesn't already exist, create a new KEY called "DriveIcons". Under this key, create a new key with the letter of your drive. I.e. C for your C:\ drive.
To change the icon for that drive, create a key inside that one called DefaultIcon and set the path of (Default) to the location of your icon
eg C\DefaultIcon\ then (Default) = D:\Documents\C Drive Icon.ico
To change the name of that drive, create a key in the drive letter one (eg C\) called DefaultLabel and set the (Default) to what you want the drive to be called. This is useful if you want to assign a long name to the floppy drive.
CHANGING OEM REGISTRATIONS.
Have you used someone's new Hewlet Packard with their OEM version of Windows XP? You've seen that HP has their own icon in the Start Menu, underneath Run, that goes to their Help Site. Now, you can have your icon that does anything you want (website, program, etc) and says anything you want. Basically, you are "branding" Windows XP (Home or Pro), great for if you are a computer builder and sell them, or you just want to make Windows XP your own. It involves Regedit.
1. Start up Notepad and creat a new registry file (*.reg) and copy and paste the following into it:
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}]
@="YOUR COMPANY NAME"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\DefaultIcon]
@="YOUR ICON HERE"
00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,68,00,70,00,6c,00,69,00,\
6e,00,6b,00,2e,00,69,00,63,00,6f,00,00,00
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\InProcServer32]
@=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,74,00,25,\
00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,00,68,00,\
64,00,6f,00,63,00,76,00,77,00,2e,00,64,00,6c,00,6c,00,00,00
"ThreadingModel"="Apartment"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance]
"CLSID"="{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\Instance\InitPropertyBag]
"CLSID"="{13709620-C279-11CE-A49E-444553540000}"
"method"="ShellExecute"
"Command"="YOUR TITLE HERE"
"Param1"="YOUR FUNCTION HERE"
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex]
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\ContextMenuHandlers]
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\ContextMenuHandlers\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}]
@=""
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\shellex\MayChangeDefaultMenu]
@=""
[HKEY_CLASSES_ROOT\CLSID\{2559a1f6-21d7-11d4-bdaf-00c04f60b9f0}\ShellFolder]
"Attributes"=dword:00000000
2. Edit where it says YOUR ICON HERE to a path to an icon (ex. c:\\icon.ico), it must be 24x24 pixels and in *.ico format. Use double back slash for path names.
3. Edit both places where it says YOUR TITLE HERE to what you want it to say in the Start Menu (ex. Elranzer Homepage).
4. Edit where it says YOUR FUNCTION here to what you want it to do when you click it, it can be anything... your website, a local HTML document, a program, a Windows funtion, whatever your imagination can provide (ex. http://www.shareordie.com).
5. Save this file as brand.reg, double-click it to enterin your information, and refresh Explorer (log off/on) to see it in the Start Menu!! This works in both Home and Professional (and probably 64-Bit Professional) Editions!
ORIGINAL WALLPAPERS.
This is more of a fun tweak than it is useful. Go to run, type regedit press ok. when that comes up go to HKEY_CURRENT_USER>Control Panel>Desktop
Now find the orginalwallpaper, right click and select modify.In the text box type the path to the file you want to be your orginal desktop wallpaper.
DELETING My eBooks AND SPECIALS FOLDER IN MY DOCUMENTS.
Click Start, then Run and type: regsvr32 /u mydocs.dll
then delete them.
DISABLE WINDOWS PICTURE AND FAX VIEWER.
By default, Windows XP opens all picture files (gif,jpg,...) with the included Windows Picture and Fax Viewer no matter what other picture viewers you have installed. To disable the Windows Picture and Fax Viewer, unregister shimgvw.dll. This can be done from command prompt: regsvr32 /u shimgvw.dll
REMOVE PAST ITEMS ICONS IN TASKBAR.
Some times When you check your TasKbar properties or when you hide or unhide icons you can see old icons from Uninstalled or old programs you dont have anymore. This Tweak will help you how to get rid of this problem Thanks to leobull of Xperience.or How To clear the Past Items or Icons list in the TaskBar, perform the following steps:
1.Open Regedit Navigate to:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\TrayNotify
2.Delete the IconStreams and PastIconsStream values
3.Open Task Manager, click the Processes tab, click Explorer.exe , and then click End Process .
4.In Task Manager, click File , click New Task , type explorer , and then click OK .
LOCKING COMPUTERS.
To lock a computer in XP, as you probably know, you press "L" while holding down "Windows Logo" key on your keyboard. However, if you would like to lock a computer remotely, for example via "Remote Administrator", you don't have this ability. What you can do instead, is to create a shortcut on remote computer's desktop where Target %windir%\System32\rundll32.exe user32.dll,LockWorkStation Start In %windir%
ADMINISTRATOR IN WELCOME SCREEN.
When you install Windows XP an Administrator Account is created (you are asked to supply an administrator password), but the "Welcome Screen" does not give you the option to log on as Administrator unless you boot up in Safe Mode.
First you must ensure that the Administrator Account is enabled:
1 open Control Panel
2 open Administrative Tools
3 open Local Security Policy
4 expand Local Policies
5 click on Security Options
6 ensure that Accounts: Administrator account status is enabled Then follow the instructions from the "Win2000 Logon Screen Tweak" ie.
1 open Control Panel
2 open User Accounts
3 click Change the way users log on or log off
4 untick Use the Welcome Screen
5 click Apply Options
You will now be able to log on to Windows XP as Administrator in Normal Mode.
BUGFIXES.
This is a strange bug in Windows XP Pro but it can and does happen to everyone. When you open the My Computer screen and your Documents folder is missing but all the other users folders are there try this tweak.
STEP 1:
START > RUN > REGEDIT > HKEY_LOCAL_MACHINE / Software / Microsoft / Windows / Current Version / Explorer / DocFolderPaths
Once you click the DocFolderPaths folder you should see all the user's folders.
STEP 2:
Add a new string value
Value Name: your user name
Value Data: the path to your docs folder ( ex. C:\Documents and Settings\your docs folder )
Exit Registry editor and open my computer, your docs folder should now be visable.
MOUSE POINTERS.
It seems that even without pointer precision disabled, the mouse under XP is still influenced by an acceleration curve. This is especially noticeable in games. To
completely remove mouse acceleration from XP, you will need to go into the registry and adjust the SmoothmouseXYCurve values. Here is how its done.
1. Click Start button
2. Select Run
3. Type 'regedit' in the open textbox
4. Open the tree 'HKEY_CURRENT_USER', select control panel, then select mouse
5. Right clicking, modify the SmoothMouseXCurve and SmoothMouseYCurve hexidecimal values to the following:
SmoothMouseXCurve:
00,00,00,00,00,00,00,00
00,a0,00,00,00,00,00,00
00,40,01,00,00,00,00,00
00,80,02,00,00,00,00,00
00,00,05,00,00,00,00,00
SmoothMouseYCurve:
00,00,00,00,00,00,00,00
66,a6,02,00,00,00,00,00
cd,4c,05,00,00,00,00,00
a0,99,0a,00,00,00,00,00
38,33,15,00,00,00,00,00
If done correctly, you will notice you are holding a markedly more responsive mouse.
HIDDEN WINDOWS XP ICONS.
Windows XP Pro and Home contains icons for folders and files that cannot normally be seen, you can select to view hidden files from the folder options menu, but there are still some that remain hidden.
You can set windows to view these files as normal hidden files, so that when you use the view hidden files and folders toggle from the folder options menu that these will be turned on/off along with the normal hidden files.
These files are usually system files and should not be altered/deleted unless you really know what you are doing, if you don't yet still wish to change them I might suggest that you create back-ups of your system first.
I will personally accept no responsibility for any damage caused by using this tweak. To view the hidden files you need to open up regedit, if you are not sure how to do this, select run from the start menu and type in 'regedit' without the apostrophe's. In the regedit window, expand out the groups by clicking on the '+' next to the name in the left hand column of regedit, and navigate to the below address.
HKEY_CURRENT_USER \SOFTWARE \MICROSOFT \WINDOWS \CURRENTVERSION \EXPLORER \ADVANCED
when you have clicked the advanced folder on the left pane, look down the list at the titles in the right hand pane, one of those titles is 'ShowSuperHidden'
double click the title and in the window that appears set the value to equal 1 to show the super hidden files and 0 to hide them.
XP HOME ADVANCED FILE PERMISSIONS.
This is actually an addition to my previous post entitled "Get XP Pro file security with XP Home". In the aforementioned post I outlined how to access
*Advance file Permissions* on NTFS file systems for XP Home simply by booting into *Safe Mode*, rt-clicking any file or folder, and navigating to the *Security tab*. This gives the user the ability to allow or deny read, write, execute, read & write, display contents, full-control, iheritance, and take ownership permissions, with many more options available to apply to different users and groups stored on the computer. Well, you don't have to do this in *Safe Mode* (XP Home). Although it is a little less intuitive, you can simply go to your command prompt - Start>All Programs>Accessories>Command Prompt. Now type "cacls" in the window (without the quotes). This gives you the ability to add, remove or modify file permissions on files and folders through the command prompt. Type "cacls /?" for help on different options and variables. You do not need to be in safe mode to use this so it makes it a little quicker than using the safe mode security tab GUI. Remember - this only applies to NTFS. Here also is a very useful link to find a lot of extras and tweaks straight from the horse's mouth - the Microsoft Resource Center. You will find a lot of very useful web-based extra's here, most of them left unknowing to the general public - such as, "Online Crash Analysis" - a site that looks like Windows Update but you can upload your crash "dump logs" (when you get those system or application crash error reports). Microsoft will then analyze the log file and tell you some more info about WHY the system crashed (ie. faulty hardware/software/conflicts, etc).
FLASHGET :BYPASSING 8 MAX SIMULTANEOUS JOBS.
Users of Flash get will notice that the maximum number of file splits is 8. This number can be increased by the tweak below:
1. Run regedit.
2. Navigate to [HKEY_CURRENT_USER\Software\JetCar\JetCar\General\]
3. Right Click -> Add String Value.
4. Name as MaxSimJobs -> Set the value as what ever number you want.
After a restart you should be able to download with more file splits.
OUTLOOK EXPRESS WINDOWS TITLE TWEAKS.
Change the window title of Outlook Express to anything you want!
In regedt32 and navigate to HKEY_CURRENT_USER\Identities\{EE383506-901D-43C6-8E40-9A61901DF7CC}\Software\Microsoft\Outlook Express\5.0. Add a new string key called WindowTitle and make its value the desired window title. Then close the registry editor, and restart Outlook Express (if it's running.) Your new title now shows up in the title bar!
WINDOWS MEDIA PLAYER 9.
When installing WMP 9 it leaves a watersign on your desktop. You can easily remove this with: regedit:
HKey_Local_Machine\SOFTWARE\microsoft\system certificates\CA\certificates\FEE449EE0E3965A5246F00E87FDE2A065FD89D4
HKey_Local_Machine\software\microsoft\system certificates\ROOT\certificates\2BD63D28D7BCD0E251195AEB519243C13142EBC3
Remove both lines and restart computer.
CHANGING THE WINDOWS MEDIA PLAYER TITLEBAR.
This is a per-user tweak. Open RegEdit.
Browse to the following key:
HKEY_USERS\S-1-5-21-xxxxxxxxx-xxxxxxxxx-xxxxxxxxxx-xxxx\Software\Policies\Microsoft\WindowsMediaPlayer
(the x's will vary from computer to computer , it's the key without the "_Classes" at the end) Create the following String, "TitleBar" , the value of this will now become the TitleBar of Windows Media Player.
AUTO DELETE TEMPORARY FOLDER.
First go into gpedit.msc
Next select -> Computer Configuration/Administrative Templates/Windows Components/Terminal Services/Temporary Folder
Then right click "Do Not Delete Temp Folder Upon Exit"
Go to properties and hit disable. Now next time Windows puts a temp file in that folder it will automatically delete it when its done! Note from Forum Admin: Remember, GPEDIT (Group Policy Editor) is only available in XP Pro.
CLEANUP STARTUP ITEMS IN MSCONFIG.
Do you ever uninstall programs and they are still listed under startup items in msconfig? Personally, I found myself with 30 such items from old installs. Microsoft leaves you no way to clean up this list, but have no fear, I have figured it out for you.
1. Open MSconfig and click on the startup items tab
2. Open Regedit and naviate to HKLM/Software/Microsoft/Sharedtools/MSconfig/startupreg
3. Compare the list of registry keys under startup reg with their counterparts in msconfig.
4. Delete the keys which are no longer valid.
5. Voila! You've cleaned up msconfig.
REMOVING SERVICES DEPENDENCIES.
This will allow you to disable a service or uninstall it from your system without effecting another service that depends on it. Here's how you do it
1. After you have set your services the way you want them and you have disabled/uninstalled something that another services depends on, run "regedit"
2. Under HKEY_LOCAL_MACHINE\System\find the service that will not function, do to another service being disabled/uninstall (found in ControlSet001\Services, ControlSet002\Services, and CurrentControlSet\Services)
3. Once you have found the service right-click on the string value, "DependOnService,"and modify
4. You should now see a list of services that it is dependent on. Simply delete the service that you have disabled/uninstalled
5. Restart your computer and your ready to go Disclaimer REMEMBER TO BACKUP YOU REGISTRY FIRST I'm not totaly sure if this will have any negative effects on your system. I used this method after uninstalling "Netbios over Tcpip" from my system completely, so that my Dhcp service would function and I have had NO negative effects on my system.
ANOTHER WAY TO DELETE HIDDEN DEVICES.
You can view and delete or modify hidden devices by:
1. Openning Device Manager. (I usually right-click on My Computer, select Properties, select the Hardware tab, then select Device Manager.)
2. Select View and check "Show hidden devices"
3. Hidden devices will appear below with the others and can be modified.
HOW TO GET "My Briefcase" IN WINDOWS XP.
go to C:\WINDOWS\system32\dllcache. look for a file named "syncapp".
double click it. an icon should appear on your desktop that says "My Briefcase". double click it. it will come up with this window that tells you how to use it.
TURN NUMLOCK ON AT LOGON.
NumLock does not toggle on by default (system-wide), even if you have it set in your PC's BIOS, because of XP's multi-user functionality. Guess Microsoft doesn't know everyone actually turns it on, which should be reason enough for what acts as "default"...
Anyway, you can hack the Windows Registry to change this behavior, or run a script at logon to turn NumLock on.
1. To enable NumLock through the Registry:
* Open Windows' Registry Editor (START > RUN, type "REGEDIT").
*. Navigate to HKEY_USERS\.Default\Control Panel\Keyboard.
*. Change the value for InitialKeyboardIndicators from 0 to 2.
2. To enable NumLock using a script, see this MS Knowledgebase article for complete instructions:
CODE
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q262625
Option 1 is the quicker method, but if you have more than one user on your system and one or more don't want NumLock on (stranger things have been known of), then option 2 is the way to go since it allows you to only attach the script to specific users.
FREE DISK SPACE BY DELETING RESTORE POINTS.
Start button-all programs-accessories-system tools-cleanup-more options. You will have the option of deleting your restore points.When your done creat one
restore point as a back up.
HOW TO REAL GET RID OF UNNECESSARY SOFTWARE
to uninstall things like msn messenger and other hidden installs thru add remove programs, do this: find sysoc.inf (you might have to enable "show hidden files" and "show hidden/protected system folders" in explorer) and open it in notepad replace all ",hide" with "," (both with out quotes) which is easiest to do with the replace all command under edit then in add/remove programs under add/remove windows compnents and whole new list of things to uninstall and add are now listed (such as internet explorer)
HAVING PROGRAMS RUN WHEN WINDOWS LOADS SLOWS DOWN YOUR STARTUP.
There are two ways do disable programs that may be in your startup (like icq, messanger,) The easiest is to do the following:
1. start --> run --> msconfig
2. Click on the "startup" tab (furthest right)\
3. Unclick any items you don't want to load when windows starts.
The second is by deleting registry entrys, this can be done the following way:
1. Start --> run --> regedit
2. Navigate to : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
3. Delete any entry's that you don't want to load up
TURN OFF INDEXING TO SPEED UP XP.
Windows XP keeps a record of all files on the hard disk so when you do a search on the hard drive it is faster. There is a downside to this and because the computer has to index all files, it will slow down normal file commands like open, close, etc. If you do not do a whole lot of searches on your hard drive then I suggest turnning this feature off:
1. Control Panel
2. Administrative Tools
3. Services
4. Disable Indexing Services
HALF LIFE AND WINDOWS XP.
1. How to recover from incompatible drivers
Before you install new drivers set a system restore point. Start>All programs>Accessories>system tools>system restore
After your new drivers don't work reset your computer. Press F8 repeatedly as soon as the BIOS screen disappears, and before the Windows XP screen appears. Select safe mode. Use system restore again to undo your mess.
2. Video Drivers
The NVidia drivers that come with XP do not allow you to run Half Life in OpenGL. Update to the newest drivers.
Despite the fact that they are not official drivers, 22.50 was the only set which worked
3. Sound Drivers
Use windows update to update Creative drivers.
4. Fixing screen flicker
Windows XP defaults to 60Hz for games. A fix is available here:
CODE
http://www.fileplanet.com/dl/dl.asp?/planetquake/ztn/nvreffix-setup.exe
Select "set: ev ery resolution to monitor's maximum supported rate"
5. Fixing lag
If you are having trouble with lag, try disabling the windows XP firewall. Go to control panel>network connections. Select connection, right click, properties, advanced, untick the firewall.
6. Mouse
You can improve your mouse smoothness for games.
Control panel>mouse>hardware>properties>advanced
Change the sample rate to a higher one, eg. 200
REGISTRY METHOD FOR REMOVING STARTUP ITEMS.
I prefer to use MSCONFIG selective startup to troubleshoot. To remove entries for good, open the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RUN and HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RUN
Delete entries of unwanted startup daemons and tray procedures.
DISPLAY MESSAGE ON STARTUP.
Start regedit, if you are unfamiliar with regedit please see our FAQ.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Modify the key legalnoticecaption with what you want to name the window.
Modify the key legalnoticetext with what you want the window to say. Restart.
REMOVE THE DEFAULT IMAGE VIEWER IN WINDOWS ME/XP.
This tweak works in Windows Me/XP, I have not try it in Windows NT/2000 yet, because i don't have that OS, you can try it if you have.
*This tweak does not work in Windows 95/98
To remove the Windows default Image Viewer, first:
Click Start Menu
Select Run menu
Type "cmd", (for Windows Me, type "command")
Then type "regsvr32 /u shimgvw.dll" to unregister this dll. This will stop it from previewing any picture that it support, e.g. JPEG, Bitmap, GIF....
* Before perform this tweak, make sure that you have the alternative Image Viewer installed in you windows e.g. ACDsee, FireGraphics... because once you do this tweak without that application, you can't open and view your image anymore! So, to undo it, type "regsvr32 shimgvw.dll" in command prompt.
SPEED UP BOOT BY DISABLING UNUSED PORTS.
You may have tried many tweaks like modifying windowsXP start-up applications, prefetches, unload DLLs method,etc. And yes those methods do work for me.
I have just accidentally found out another way to give you an extra boost in windowsXP's boot performance. This is done by disabling your unused devices in
Device Manager. for example, if you don't have input devices that are connected to one of your USBs or COM ports, disabling them will give you an extra perfromance boost in booting. Go to Control Panel -> System -> Hardware tab -> device manager Disable devices that you don't use for your PC and then restart.
CLEAR UNWANTED ENTRIES FROM ADD/REMOVE PROGRAMS.
Run the Registry Editor (REGEDIT).
Open HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\ Windows\ CurrentVersion\ Uninstall Remove any unwanted keys under "Uninstall."
CLICKING * .AVI FILES ON EXPLORER CAUSING 100% CPU USAGE.
Well windows seem to have a REALLY big problem when it comes to reading AVI files. It seems that when you click on an AVI file in explorer, it'll try to read the entire AVI file to determine the width,height, etc. of the AVI file (this is displayed in the Properties window). Now the problem with Windows is that if you have a broken/not fully downloaded AVI file that doesnt contain this info, Windows will scan the entire AVI file trying to figure out all these properties which in the process will probably cause 100% CPU usage and heavy memory usage. To solve this problem all you have to do is the following:
1. Open up regedit
2. Goto HKEY_CLASSES_ROOT\SystemFileAssociations\.avi\shellex\PropertyHandler
3. Delete the "Default" value which should be "{87D62D94-71B3-4b9a-9489-5FE6850DC73E}"
Voila! Please not that this will no longer provide you with the windows properties displaying the AVI file information such as width, height, bitrate etc. But its a small price to pay for saving you resources.
NOTE: Please use caution when using regedit. Improper usage may cause windows to behave imcorrectly. Also, I cannot be held resposible. Backup your registry first.
CD ROM STOPS AUTOPLAYING/AUTORUN.
And the AutoPlay Tab has disappeared in My Computer, Devices With Removable Storage, Right Click on CDROM, Properties.
Solution: The service: "Shell Hardware Detection" has been set to Manual or Disabled. Go to Control Panel, Administrative Tools, Services. Return this service to "Automatic".
SHUTDOWN XP FASTER 1.
Like previous versions of windows, it takes long time to restart or shutdown windows xp when the "Exit Windows" sound is enabled. to solve this problem you
must disable this useless sound. click start button then go to settings -> control panel -> Sound,Speech and Audio devices -> Sounds and Audio Devices -> Sounds, then under program events and windows menu click on "Exit Windows" sub-menu and highlight it.now from sounds you can select,choose "none" and then click apply and ok. now you can see some improvements when shutting down your system.
SHUTDOWN XP FASTER 2.
Start Regedit.
Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control.
Click on the "Control" Folder.
Select "WaitToKillServiceTimeout"
Right click on it and select Modify.
Set it a value lower than 2000 (Mine is set to 200).
EASIEST WAY TO DELETE PREFETCH.
1. Open notepad.exe, type del c:\windows\prefetch\*.* /q (without the quotes) & save as "delprefetch.bat" in c:\
2. From the Start menu, select "Run..." & type "gpedit.msc".
3. Double click "Windows Settings" under "Computer Configuration" and double click again on "Startup" in the right window.
4. In the new window, click "add", "Browse", locate your "delprefetch.bat" file & click "Open".
5. Click "OK", "Apply" & "OK" once again to exit.
6. Reboot your computer.
SPEED UP MENU DISPLAY.
When using the start menu the you will notice a delay between different tiers of the menu hierarchy. For the fastest computer experience possible I recommend changing this value to zero. This will allow the different tiers to appear instantly. Start Regedit. If you are unfamiliar with regedit please refer to our FAQ on how to get started.
Navigate to HKEY_CURRENT_USER\Control Panel\Desktop
Select MenuShowDelay from the list on the right.
Right on it and select Modify.
Change the value to 0.
Reboot your computer.
16 COLOUR ICONS.
If you select 16bit mode for graphics your icons will revert to using 8bit (16 color) icons. Yuck! Change the following registry setting to:
[HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics] "Shell Icon BPP"="16" "Shell Icon Size"="32" Setting the BPP to 16bit will yield 65565 colors for icons.
DE-CRYPT ENCRYPTED FILES ON WINDOWS XP.
1. Login as Administrator
2. Go to Start/Run and type in cmd and click OK.
At the prompt type cipher /r:Eagent and press enter
This prompt will then display:
Please type in the password to protect your .PFX file:
Type in your Administrator password
Re-confirm your Administrator password
The prompt will then display
Your .CER file was created successfully.
Your .PFX file was created successfully.
The Eagent.cer and Eagent.pfx files will be saved in the current directory that is shown at the command prompt. Example: The command prompt displays
C:\Documents and Settings\admin> the two files are saved in the admin folder. (For security concerns, you should house the two files in your Administrator folder or on a floppy disk).
3. Go to Start/Run and type in certmgr.msc and click OK. This will launch the Certificates Manager. Navigate to Personal and right click on the folder and select All Tasks/Import. The Certificate Import Wizard will appear. Click Next. Browse to the C:\Documents and Settings\admin folder. In the Open dialog box, change the Files of Type (at the bottom) to personal Information Exchange (*.pfx,*.P12). Select the file Eagent.pfx and click Open. Click Next. Type in your Administrator password (leave the two checkboxes blank) and click Next. Make sure the Radio button is active for the first option (Automatically select the certificate store based on the type of certifcate). Click Next. Click Finish. (You'll receive a message that the import was successful). To confirm the import, close Certificates Manager and re-open it. Expand the Personal folder and you will see a new subfolder labeled Certificates. Expand that folder and you will see the new entry in the right side column. Close Certificate Manager.
4. Go to Start/Run and type in secpol.msc and click OK. This will launch the Local Security Policy. Expand the Public Key Policies folder and then right click on the Encrypted File System subfolder and select Add Data Recovery Agent... The Wizard will then display. Click Next. Click the Browse Folders... button. Browse to the C:\Documents and Settings\admin folder. Select the Eagent.cer file and click Open. (The wizard will display the status User_Unknown. That's ok). Click Next. Click Finish. You will see a new entry in the right side column. Close the Local Security Policy.
You, the Administrator are now configured as the default Recovery Agent for All Encrypted files on the Local Machine.
To Recover Encrypted files: Scenario #1
If you have completed the above steps BEFORE an existing user encrypted his/her files, you can log in to your Administrator account and navigate to the encrypted file(s). Double click on the file(s) to view the contents.
Scenario #2
If you have completed the above steps AFTER an existing user has already encrypted his/her files, you must login to the applicable User's User Account and then immediately logout. Next, login to your Administrator account and navigate to the encrypted file(s). Double click on the file(s) to view the contents.
*Warning Do not Delete or Rename a User's account from which will want to Recover the Encrypted Files. You will not be able to de-crypt the files using the steps outlined above.
DUMP FILES TWEAK & DISABLE DR.WATSON.
"Dump file. A dump file stores data from memory during a system crash and can be helpful when diagnosing problems, but like a swap file, it can also expose a lot of sensitive, unencrypted data. To prevent Windows from creating the file, go to Control Panel | System. Click on the Advanced tab and then the Settings button on the Startup and Recovery pane. Set the drop-down menu under Write debugging information to (none). "Similarly, the debugging program Dr. Watson saves information when applications crash. To disable it, go to:
HKEY_local_machine\software\Microsoft\WindowsNT\CurrentVersion\ AeDebug and set the Auto string to 0. Then use Windows Explorer to go to Documents and Settings\All Users\Shared Documents\DrWatson. Delete User.dmp and Drwtsn32.log, the insecure logs the program creates." Heed related advice from 'microsoft' regarding 'Disable Dr.Watson' first before the preceding Dr. Watson advice (go Google search.) Back up with System Restore, and go ahead. As cautious as I am, I have gladly applied these tweaks, and followed related microsot advice on Dr. Watson.
Precaution: Backups All Of Your Data Before Tweaking, Not All Of The Tips I've Mentioned Above Were Tested. I Don't Responsible For Any Damages. Happy Experiments
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