Possible processor problem...
in one of my old computers, I am running an Athalon XP 2000 processor on a Gigabyte Ga-7VA mobo. I have frequently been getting random restarts on it. So the first thing I did was buy a new stick of RAM and took the old one out. Still reboots on its own.. so its not a memory problem. Before the mem test... I had an old crappy heatsink and fan on it.. the temps were high on it.. 64 C.. got a thermaltake heatsink and fan.. works great.. temps are in the 32 C for the CPU. So its not a heating problem. I have narrowed it down to either a bad mobo or my cpu chip is damaged. The only time the computer locks up and reboots is when i do a virus/spyware scan. I usually test if it freezes with Spybot S & D. Is the processor bad even though it boots up and the temps are cool? Sometimes if the computer is running normal.. being afk.. once i come back.. the comp monitor is blank and i move the mouse.. type keys and it doesnt come back up on screen.. have to restart and sometimes it doesnt go past the XP boot up. If I turn the computer off for a few minutes.. then restart it... it boots up fine and runs until i do a heavy virus or spyware scan and it locks up. Any suggestions? Could it be the graphics card??