I am experiencing random restarts with my computer running WinXP Home, The machine will boot normally, splash screen appears, sometimes it will run normally for 30 minutes sometimes only 5 minutes before it goes into shutdown/auto restart mode.
I have checked the fan speeds and temperatures all are within normal ranges, the machine is spotless inside, no dust or crud.
I checked the power supply voltages 5 and 12 volts are normal with no ripple.
When running in the SAFE mode I experience no restarts.
My F-secure virus program shows nothing.
The machine is about 7 years old and running Service Pack 3.
It will reset regardless of the USER. Just the splash screen and no USER.
Loads of available memory and hardrive space on this machine.
I am assuming this is a Virus at this point in the trouble shooting