My system powers down when it hits a temperature of 52c.\n\nAsus A7N8X Deluxe - Bios:c1005\nAMD Athlon XP 2500+ Barton w/ Stock cpu fan\nPair of 512MB Corsair XMS pc3200\n350w PS\n\nEverything worked fine until I overclocked my system to an XP3000+ w/\n200FSB. When I overclocked to that setting (200 fsb w/ 10.5\nmultiplier) the system ran fine for about 1 hour of playing\nbattlefield 1942, then the system locked up in the middle of the game\nfor about 1 second, then powered itself off instantly. Completely\nturned the pc off. I assume this was the C.O.P. kicking in on the\nmotherboard.\n\nAfter waiting about half an hour I started up the PC, it booted into\nthe BIOS without any problems. I set the computer back to 2500+ stock\nsettings (166fsb and a 11.0 multiplier). I saved the BIOS and booted\nwindows up just fine. I let the system set idle for 10 hours, no\nproblems. I returned to playing 1942 and after about 20 mins the\nsystem locked and powered down again, same exact symptoms as when it\nwas overclocked. But this time it was only at stock settings.\n\nI waited, rebooted, set the BIOS to reload the defaults, saved andd\nbooted into windows. I downloaded Prime95. I ran the torture test\nthe computer had no errors and I slowly watched the cpu temp rise on\nthe Asus Probe. Once it hit 52c the computer powered itself down.\n\nI thought it might be a power supply problem, I disconnected some of\nmy case fans, and ran the computer with the side pannel off. I then\nran the torture test again, system ran fine with no errors steady at\n38c. I let it run for 2 hours no problems.\n\nI then re-connected all the fans and left the side pannel of the case\noff, the system still ran fine under Prime95 and no power downs.\nSystem ran stable at 45c during this stress test.\n\nI then put the side of the case back on, and watched the temp slowly\nrise using Prime95 and asus probe. Once I hit 52c it powers down.\nI've verified this test on 4 tries now. Whenever I hit 52c, lights\nout.\n\nAny ideas, please help. My guess is that the motherboard C.O.P.\nfeature was fried when I overclocked the system. Before I overclocked\nmy system, it ran without powering down at 55c.\n\nThanks.