The Windows system consists of thousands of files. Many of them have strange names, others have extensions that most users have never seen before. Normally you do not need to worry about these files.

I have a .sys file that i would like to modify.It controls my CPU fan speed and my Power Supply fans.I am wondering if WinXp have a prog that allows to modify .sys files,or if there are any 3rd party ...

You may see FAT_FILE_SYSTEM Blue Screen because of many different reasons such as faulty Hardware, bad sectors in Hard Drive, etc. The main cause is disk corruption in the file system or bad blocks ...