Right I will try and explain this as best i can, ask more questions if you need to.............anyone with ay ideas please share them......... Well.....it has gotten to the point where my XP crashes roughly 50% of the time when i restart or after a shutdown. It seems to loose some start up files and the same ones all the time... Before it gets to the splash screen of XP loading and everything it stops and says c:\windows\system32\ file missing or whatever. It is usually ntrsk.exe (not sure thats the right name) and lst night it was "hal.dll". But is so starnge it happends so often, I think others too! I have XP on a 6gig NTFS that has been repeatedly checked and another 80gig NTFS for games and files etc. checked also. I have scanned for viruses repeatedly with pc-cillin, came with computer and have updated this and nothing has been found. I am really at a loss, I have got hold of memtest3? or something and from what i can see it has found no errors?? If i could find so diagnostic software or something, I dont know, but it is really getting beyond a joke. The PC was only concieved in February!!! Please anyone?!?!?!?