If he's getting a BSOD from BC2, it's probably a driver issue.
hmmm - overlooked the BC2 part. Oddly enough, BFBC2 is a very CPU intensive game - crysis however is a GPU intensive game.
i had one thread where the OP had his mosfets heat up to near alarming temps when only gaming on BC2...later digging found that BC2 did this to many people.
so i think its a stock cooler problem. your cooler isn't enough to cool your cpu when you game with BC2. on second thoughts - please post FULL system specs.