Okay, I stuipedly 'accidently' deleted some random registry files... The result is as XP boots it gives my a error that AutoChk.exe cannot be found... XP still boots fine.. But I would like to fix the error. What exactly is AutoChk? Do I need it?.. I have AutoChk, I did a file search. So I must of removed something that links bootup with AutoChk.. Help :blackeye:.