Can you boot into Safe Mode? Hold the F8 key after the memory test to get the startup menu. Boot into Safe Mode. Then right-click My Computer and choose Properties. Go to the Advanced tab, Startup and Recovery section, Settings button, System Failure section. Uncheck "Automatically restart." Now when the system fails you will see a blue screen with some information on it. That may give you a clue as to what is going on. Or you can post that information here.
Windows XP MVP
"Jeff" <jwrbisprintpcs.com> wrote in message news:0cc601c34d7e$df4fe8c0$a001280aphx.gbl...> I am running XP Home with a P4 1.6GHZ. The machine is
> constantly restarting itself. I have replaced the
> processor and power supply and do not have anu viruses.
> Does anyone have any sugestions.