Hi, it seems that everytime I start playing a game for about 5 minutes or so my computer locks up and I have to restart. Can anyone help tell me whats wrong? I tried putting my videocard back at normal speeds, but it still does it. My Temps are at about 47 under load so it shouldnt be an overheating issue. I was thinking the power supply because it is only a 300 watt antec one that came with my case.