When I'm playing a game, after several minutes, the computer will shut off completely. It seemed that when I turned my case fans on full speed I was able to play the cod2 demo longer than when the case fans were on 3/4 of full speed. I have an athlon 64 3200 not o/c'ed and a radeon x800 128mb which is also not oc'ed. The cpu is using the stock hsf with the included amd thermal pad. What should I do? Would a new hsf solve my problem....my case temps seem pretty steady at around 32C but I have checked my cpu temp after exiting the game and it is usually around 55C.