Question My cpu is overheating

Feb 23, 2022
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My i7-3770k is running up to 90c the moment i turn on my pc, ive tried dusting it, replacing my cpu fan/heat sink, i even took it out and dusted the motherboard and the cpu but nothing, also replaced my thermal paste on it and i factory reset the pc and it didnt help. Im just asking for advice on what it could be.
 
Maybe the problem is under the IHS - but the cpu isn't that old..?


-faulty sensor like popatim says.
-virus or malware slamming the cpu as soon as Windows is loaded.
-using old paste. The substances are usually good for like, 7 years? It varies a little.
-the TIM under the cpu's IHS has expired. The Intel TIM's performance isn't stellar, but one thing it did have going for it was longevity.
 
3 different coolers, and bios shows a 90°C reading. That's a sensor gone bunk inside the cpu. Any software I know of also gets its info from the same sensor as bios does. What I'd suggest is try Coretemp or HWInfo64 and look at the individual core temps for all 4 cores. You can disable the cpu over temp warning in bios for that.

There's 2 sets of sensors in a cpu for temps, a network of sensors for the cores, and a fixed point for the 'cpu temp'. I'm betting that fixed sensor point is done and gone toast and the individual cores will be normal temps.

If you haven't already, you could try updating the bios to the latest. There's a slim possibility it's a bios error and is misreading the sensor or reading an entirely different address.
 
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I did a test, 2 different cpus into my motherboard they both immediately went to 90c then i put them into my old pc and my partners pc and they were normal temps
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My motherboard does have a common Occurrence of problems involving overheating.
 
The cpu has the sensor. So it's either a setting in bios allowing over voltage on the cpu, or I'd guess a vrm is toast and allowing over power situation resulting in over volted cpu. Could run HWInfo64 (sensors only) and see what vcore, vid, vccio voltages are. But if 2 seperate cpus show the same results in 2 seperate mobo's, and only yours is high, it's definitely pointing at a motherboard issue of some sort.