Similar to this guy's thread but I'm not getting a BSOD so I figured I'd start another thread. http://www.techpowerup.com/forums/showthread.php?t=142032 I can pass Prime95 for a long time but if I play a game (namely BFBC2) for around 30 minutes sometimes less the system will just completely lock up and freeze leaving everything on the screen but making the terrible buzzing sound through the speakers like it's looping the last half second of audio over and over and over and over. Windows event log shows Kernel Power & Event ID 41 I've got a 4-rail PSU that's 2 years old and I'm suspect that it may be the culprit. Any ideas? I've reset my bios to default everything. Just got a Noctua cooler so I know it's not running hot and my card isn't too hot so I'm not sure what the issue is.