My computer seems to overheat but i'm not sure why and as such cannot replace the component that is causing the problem... The CPU temp is about 25 - 30 and never hit above 40. But the "chassis" temp can averages about 50 while doing nothing and hits 70 when I run something even remotely complex such as a game then it shuts off and wont turn back on until I leave it to cool for a while. Some of my more hardware inclined friends have suggested it may be my northbridge or tribridge or something? I have a fully working CPU fan (though the CPU doesnt seem to be the problem) and two fully working chassis fans both running about 4000rpm. Also, why the shut off at 70? is it a safety precaution that can be changed or can it simply not function at such high temperatures? I have a friend with a monster computer with many, many fans that he claims runs at 90 degrees Thanks in advance, any queries that I havent covered please ask.

It seems your temp readings are reversed. It's virtually impossible for the system (chassis) to run hotter than the CPU. Where are you getting these temp readings from? If it's a software program, I suggest you check the BIOS to see if temps readings are the same.

Yes i'm using a software program to check the temp. How do I check it through the BIOS? If you are right and its the CPU that is over heating then will I need a new cooling method or a whole new CPU?

Oh wait, I worked out how to check the temp in the BIOS. It is the CPU you were right! It's currently holding steady at 50 degrees but that is with with its own working fan AND a large household size fan blowing into the side. Any attempt to do something like running a game will send it well over the top and shut the computer down. How do I fix the CPU overheating? If fashion is your trade then when you're naked I guess you must be unemployed...

Your CPU is running warmer than what it should be. Are your using the stock fan? If not I suggest you replace your stock fan with a Zalman heatsink and buy decent thermal paste. Look at newegg.com for best service/prices. Bio Star 2 gig RAM OCZ, AMD 64 3400 Athlon Thermaltak SVKing Case XFX 7600 GT Zalman CNP Heatsink 500W Antec TruPower

Shutoff temperature is adjusted in the bios.You can disable or change this setting.Install as many extra fans as you can to let the air flow out from the back. Don't push the computer against the wall or install inside an office cabinet.Keep the opening at the bottom front clear(about 1 in. back from the front)just over the edge of the table. Measure fan size from center hole to hole.Those 4 holes are used to screw the fan in place.Most cases would use 80 mm fans. Get some Y connectors for 5.25 in.hardware as required.One fan can be connected to the motherboard but the others get current from one large power connector as used on a cdrom drive. I have a Celeron 3.33 GHz working at 58 C under load with plenty of ventilation.

Thanks for the help. I will look into a new heatsink :) If fashion is your trade then when you're naked I guess you must be unemployed...