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CPU overheating when in idle

Pc specs:

CPU - intel core i5-2400
GPU - amd radeon hd-6700 series
RAM - 4gb(no brand, at last I dont know the brand)
Memory - WD caviar blue

Clocks:
CPU - non turbo-3094 MHz
Turbo-3139 MHz
GPU - clocked as far as catalyst alowed me too.

Some few months ago I had a beeping sound from my PC. Later found out that its overheating warning, I bought a cooler master termal paste and the problem was fixed. Today I heard my PC beeping again. After investigation I foud out that it's overheating only while beeing idle. There where aroun 79 proceses, but cpu was not working hard. All the sudden it jumps to 100% and goes to 93°c. I move the mouse around and it goes back to around 63°c. I had no malware as I tought that could be the problem. Today was a farely hot day, but my pc gas always worked at thoss temperatures. I will try moving my pc to more free place and aplaying new thermal paste.
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More about cpu overheating idle
  1. Best answer
    1) Reseat the cpu cooler.
    2) What case do you have? or maybe open the case, use the fan blow air to it.
    3) Use the software like core temp, or HWiNFO32/64 to monitor the temp.
    core temp http://alcpu.com/CoreTemp/
    HWiNFO32/64 http://www.hwinfo.com/download.php
  2. cin19 said:
    1) Reseat the cpu cooler.
    2) What case do you have? or maybe open the case, use the fan blow air to it.
    3) Use the software like core temp, or HWiNFO32/64 to monitor the temp.
    core temp http://alcpu.com/CoreTemp/
    HWiNFO32/64 http://www.hwinfo.com/download.php


    I am using the Coretemp And the case is a bad one its some kind of Gigabyte, one with the blue stripe.
    I founf out, as long as I am doing something something, like even moving the mouse around the cpu usage is around 30%, but when its just sitting on its own, it slowly picks up to 100 ands starts overheating.
    I found some usefull blogs and next time will start my PC in safemode(by holding F8) and take a look at what proceses and startup proceses are runing.
    If none of thay doesnt help I will get some more malware detection tools and set a full scan.

    Thank you!
  3. I cleaned the PC out and got realy suprized of how much dust it has colected over a 4 month period.
    After cleaning it I aplied new termal compound (cooler master e2 essentialls) and seated the heatsink back on(the intel one, wich for me is quite hard to do), started up the PC and heat was around 40°c and CPU usage vent down to as low as 2%!!!

    what I think was all the dust building up in CPU's heatsink and heating up, the fail safe system(enabled in my BIOS) did its job and clocked the cpu down. That didnt stop the dust from heating up even more and so the clocks vent down so far, that the CPU could not run anything and still overheated.


    Thank you for help!!
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