I have an Intel Core2 Duo CPU E6750 @ 2.66GHz with standard heating (a heat sink and a fan). I've had this computer for a year and a half, and I haven't had any overheating problems previously. A few days ago, while I was playing a game, the beeper started suddenly beeping in a repeating high tone - low tone -pattern. I restarted my computer, and googled a bit. I figured it was an overheating-related problem. I downloaded SpeedFan and checked the temperatures. When idle, the temperatures are about 50 C. However, during gaming temperatures quickly rise close to 100 C. After about 5 minutes of gaming I got these temperatures: CPU 64 C Core 0 80 C Core 1 77 C Core 54 C I don't really know what those Core temperatures are, but they're the ones that get close to 100 C when gaming. My case has one fan in the rear. I guess I could get a fan in front as well. Should I do that? I dusted my computer recently, so that isn't the problem. Thank you for your help.

You don't "need" a front case fan. http://icrontic.com/articles/pc_air... Check the temp readings in the BIOS to make sure they agree with Speedfan. If you dusted your PC before this problem began, it's possible that you dislodged the HSF. Double check to make sure it's mounted securely, if it's not, remove it, thoroughly clean it of all traces of the old thermal compound, then apply a fresh layer of paste. Follow these instructions regardless of the brand you use: http://www.arcticsilver.com/pdf/app...

Thanks for your response. I downloaded Real Temp and it confirms what SpeedFan is saying. I can check the BIOS temp next time I restart. I only dusted my PC after this problem occured. The weird thing is that I've been playing on this same computer for a year and a half, but so far I've had no problems. Then suddenly there appears an overheating problem. The only reason I could think is some kind of (not too serious) heat sink failure. Perhaps I'll remove the CPU fan and the heat sink tomorrow to see what's wrong.