Quote Originally Posted by FastGame View Post
I don't know of anything that'll do that Its hardware, bad driver/conflict related.
I agree... (the only thing close to similar behaviour was the old 'Blaster' worm, but that would shutdown XP every 60seconds...)...

I'd check all the cables inside the PC Case, ensure the HeatSinkFan is properly seated... Motherboard health and temps.

Please post your computer specifications.