Im having a problem with my pc, I just recently got a new graphics card (EVGA GTX660 SC) whenever i play an intense game graphics wise, after about 10 mins or so my pc will shut off. I found out what the temperatures were when my pc shuts off and my cpu and gpu never reached higher that 60 degrees c. I was wondering if anyone could shed some light on what is going on. My PSU is a PowerPlus 500w. Any help is appreciated