I have been trying to cure the well-documented XP restart problem for many months, with no success.
The only original hardware left unchanged is the motherboard and the two hard drives.
I have re-formatted both drives and installed XP Home (English) on drive ‘C’ and XP Home (French) on drive ‘D’. Before I installed any programmes I checked the shutdown,and I still had the same problem. Everything operates as it should, the PC powers down, turns off, then immediately powers back up again.
Even if I use the power off button the same thing occurs. The only time I can successfully switch off is if I have a BSOD, when the power off button works correctly, so the problem must be Windows associated, but what?
I have run out of ideas….