BEST thing to do is re install Windows
BSOD
A Blue Screen of Death (also known as a stop error, BSoD or blue screen) is an error screen displayed by certain operating systems, most notably Microsoft Windows, after encountering a critical system error which can cause the system to shut down to prevent damage.
Bluescreens on NT-based Windows systems can be caused by poorly written device drivers or malfunctioning hardware. In the Win9x era, incompatible DLLs or bugs in the kernel of the operating system can also cause bluescreens.
Bluescreens can also be caused by physical faults such as faulty memory, mains power supply voltage variance or spikes in conjunction with or magnified by power supply unit voltage rating not matching the mains supply (such as a 220V PSU attached to a 240V mains outlet), the power requirements of the computer exceeding the capacity of the PSU, overheating of components, intermittent power to hard disk drives or other parts, faulty hardware, or hardware running beyond its specification limits. Bluescreens have been present in all Windows-based operating systems since Windows 3.1; earlier, OS/2 and MS-DOS suffered the Black Screen of Death, and early builds of Windows Vista displayed the Red Screen of Death after a boot loader error.
The term "Blue Screen of Death" originated during OS/2 pre-release development activities at Lattice Inc, the makers of an early Windows and OS/2 C compiler. During porting of Lattice's other tools, developers encountered the stop screen when NULL pointers were dereferenced either in application code or when unexpectedly passed into system API calls. During reviews of progress and feedback to IBM Austin, the developers described the stop screen as the Blue Screen of Death to denote the screen and the finality of the experience.
Try this 1st:
SUMMARY
Chkdsk (Chkdsk.exe) is a command-line tool that checks volumes for problems. The tool then tries to repair any that it finds. For example, Chkdsk can repair problems related to bad sectors, lost clusters, cross-linked files, and directory errors. To use Chkdsk, you must log on as an administrator or as a member of the Administrators group.
You can also run Chkdsk from My Computer or from Windows Explorer.
Manual steps to run Chkdsk
Notes
• Chkdsk requires exclusive access to a volume when it runs. Therefore, if one or more of the files are open on the disk that you want to check, Chkdsk displays a prompt asking if you want schedule the disk check for the next time that you restart your computer.
• Chkdsk might take a long time to run, depending on the number of files and folders, the size of the volume, disk performance, and available system resources, such as processor and memory.
• Chkdsk might not accurately report information in read-only mode.
Manual steps to run Chkdsk at the command prompt
1. Click Start, and then Run.
2. In Open, type cmd, and then press ENTER.
3. Use one of the following procedures:
• To run Chkdsk in read-only mode, at the command prompt, type chkdsk, and then press ENTER.
• To repair errors without scanning the volume for bad sectors, at the command prompt, type chkdsk volume:/f, and then press ENTER.
Note If one or more of the files on the hard disk are open, you will receive the following message:
Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)
Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.
• To repair errors, locate bad sectors, and recover readable information, at the command prompt, type chkdsk volume:/r, and then press ENTER.
Note If one or more of the files on the hard disk are open, you will receive the following message:
Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)
Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.
Manual steps to run Chkdsk from My Computer or Windows Explorer
1. Double-click My Computer, and then right-click the hard disk that you want to check.
2. Click Properties, and then click Tools.
3. Under Error-checking, click Check Now. A dialog box that shows the Check disk options is displayed,
4. Use one of the following procedures:
• To run Chkdsk in read-only mode, click Start.
• To repair errors without scanning the volume for bad sectors, select the Automatically fix file system errors check box, and then click Start.
• To repair errors, locate bad sectors, and recover readable information, select the Scan for and attempt recovery of bad sectors check box, and then click Start.
Note If one or more of the files on the hard disk are open, you will receive the following message:
The disk check could not be performed because the disk check utility needs exclusive access to some Windows files on the disk. These files can be accessed by restarting Windows. Do you want to schedule the disk check to occur the next time you restart the computer?
Click Yes to schedule the disk check, and then restart your computer to start the disk check.
The following table lists the exit codes that Chkdsk reports after it has finished:
Exit code Description
0 No errors were found.
1 Errors were found and fixed.
2 Disk cleanup, such as garbage collection, was performed, or cleanup was not performed because /f was not specified.
3 Could not check the disk, errors could not be fixed, or errors were not fixed because /f was not specified.
For more information about Chkdsk, visit the following Microsoft Web sites:
• Chkdsk:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/chkdsk.mspx (http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/chkdsk.mspx)
• Running Chkdsk to repair file systems:
http://technet.microsoft.com/en-us/library/bb457122.aspx (http://technet.microsoft.com/en-us/library/bb457122.aspx)
For more information about Chkdsk, click the following article number to view the article in the Microsoft Knowledge Base:
314835 (http://support.microsoft.com/kb/314835/) An explanation of the new /C and /I switches that are available to use with Chkdsk.exe
http://support.microsoft.com/kb/315265
How To Fix XP Blue Screen Error
Is your computer infected with the XP blue screen error? This is the error that shows up as blue screen with white text, and there is usually no way to recover the computer, except to restart it. For some people, the blue screen may go away after that, but that was certainly not the case for me a few months ago. It kept reappearing regularly afterwards, and I was convinced that something was wrong with the system.
This article will discuss some of the issues and causes of the blue screen, and how I finally managed to get rid of it.
1. Why Does The Error Occur?
Once the blue screen error persist on your computer, it will not go away unless you fix it. The most common reason for the problem is errors in the computer registry. It contains all the instructions that instruct your program applications to run correctly.
Another possible reason for the blue screen error is due to bad sections in the RAM. Your CPU is regularly making calls to your Random Access Memory, and having bad sections inside can cause the computer to stop processing and show the blue screen.
2. How To Repair The Registry?
The blue screen problem can be easily fixed by using a registry cleaner, if your errors are caused by errors in the registry. This was exactly what I did to cure my computer. It does not only get rid of the blue screen, but you should also find that your computer performance will improve if you have never maintained your registry before.
To clean your registry, you will need to download a cleaner software and run a free scan to find all the errors. To download the top rated software that I used, you can visit my website link at the end of this article to learn more.
3. How To Fix The RAM?
If unfortunately, your computer problems are coming from the RAM, you will have to replace the faulty RAM stick. You can also test your current RAM stick by changing it with another working one, and see if the blue screen error returns. If the error still persists, it would mean that there is no problem with the RAM stick, and vice versa.
Are you looking to fix your computer blue screen quickly? Read the author's review of the Best Registry Cleaners on the market now at http://www.review-best.com/registry-cleaner.htm and completely clean up your computer registry in 2 minutes!
Article Source: http://EzineArticles.com/?expert=Austin_Porter
Has your computer ever gotten the "Blue Screen of Death"? OK, that name might be a bit over dramatic, but it has become very famous through the years of the Windows operating system. One day everything is going fine, and you're your pounding away on the keyboard when it happens. Your screen disappears and a blue one pops up in its place with a cryptic message saying windows has encounter an error and must shut down. Then it gives a lot of numbers in the form of 'OOxOOOOOO (OOxOOOOOO) etc...).
For a lot of people, this means that the computer is either going to be replaced, or taken into a shop to be repaired. Well, I'm writing this to give you another option! Fix-it-yourself to save money and a lot of time. Most computer repair places are so packed with computers to fix, that they will take about a week to get to yours. Then they will charge close to $100 to fix it!
For starters, I'll explain why your computer has gotten the Blue Screen. There are several reasons it could have shown itself, the most common is the installation of a driver or other program onto the compu