Last night my daughter's PC kept switching off whenever she accessed Windows. It would boot up in Safe Mode, however.
Now, this morning Windows worked. But then it kept switching off at a certain point on an internet game according to her. I tried various things like uninstalling the hardware monitor and the PC kept restting seeingly randomly within a few minutes of being in Windows.
I had enough so decided to put the Windows CD in and do a repair job to see if that would fix it - curiously enough however, as soon disc had finished loading various things and was about to go to the screen with the user agreement and you have to press F8 to agree (and at the bottom it said something like 'Loading Windows'), the PC switched off again.
I have no idea what could be causing this but it does seem Windows related, maybe something to do with BIOS too?
I tried a System Restore in Safe Mode but the system went through the motions and then told me that it couldn't restore it.
Throughout this, Windows has asked to be validated again 3 times, even though I have validate it again each time.