Sometimes, when I just play games such as mw3, or am just surfing around in the forums. I suddenly just BSOD and usually get the system_service_exception error! I do overclock, however I don't see how this can be a problem as I lowered my overclocked for a small 4ghz OC. But this can't be the problem, as I had prime 95 run for 8 hours, and it passed the intelburn in test! However, it could be a problem with my graphics card (gtx 550ti) can anyone confirm this?