The Blue Screen Error - critical system error

The Blue Screen Of Death (as its commonly known)is a common error type found in Windows XP. You must have noticed that sometimes while XP is running and suddenly a complete blue screen occurs with heading something like "The system has been halted to Prevent further damage to your system". Its a fatal error and at the middle somewhere you will find error name and its HexaDecimal code like: "0x0000007A:KERNEL_DATA_INPAGE_ERROR". Its just an example there's a hundred of such error codes that the system will show based on the problem with your hardware.
It also show at the bottom that its dumping memory to file.
This is common error which occurs because of hardware and sometimes internal software problems.
Many a times when your RAM is not inserted correctly or some hardware like Hard-disk and others have any problem then this error occurs.
The way to handle these errors are to 1st check whether this error is only once or it occurs again and again.
If it occurs once then it might be some temporary problem may be due voltage fluctuation or file corruption.
But if it occurs again and again then it is something important. Note down the error code which is a hexadecimal number, something like 0x0000002C: And the error name. Then go to google and search for it. Since there are many codes and problems so i cannot state solution for each but on net its available.
Secondly if u can't find a reason or solution for your problem then just open your CPU and assemble it again. All connection again. If its related to DATA and Memory then run chkdsk and other tools.