All of a sudden my PC CPU is overheating

October 25, 2011 at 10:39:31
Specs: Windows XP, Intel Q8200 2.33Ghz
My computer CPU is overheating. Twice on start up I have a 'thermal cut out' warning and it has closed down automatically. I ran a sensor program and the CPU temperatures vary between 68C which is fine but then jumps up to 98C, which is terrible! I've cleared out all the dust and the fan seems fine. It switches to maximum speed frequently but this doesn't seem to reduce the temperature. I suspect there is a faulty component which is causing the CPU to run hot, but how do I find out what and what should I do to solve this problem before my Cpu is damaged?
I am running two external HDs via USB ports.

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October 25, 2011 at 11:02:01
Perhaps the heatsink is not securely seated or the paste has dried out in any event, if the fans are a spinnin, re do the heatsink....scrap off the old stuff, apply new thermal paste (don't over do it, but cover the area well), re seat the heatsink and see if that fixes the problem. Many chips run quite hot normally, you would have to look up your specific chip to see it's range, but those temperatures are not uncommon for some setups. The fact the bios is flagging it does suggest overheating and if the fans are working...we check the heatsink on the chip.

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October 25, 2011 at 12:05:29
Nowdays overheat can't damage the CPU. As suggested above try to check heatsink if it's installed correct, if u remove the heatsink the old thermal paste must be removed and apply new one. For best result use small dot method.

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