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i7 930 core temps running hot after dusting inside of case

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May 18, 2013 2:46:44 PM

Hi All,
To start I apologize for my lack of knowledge with regards to computer hardware. My problem is this: I opened my case to dust it last night (there was quite a bit) and in the process I noticed quite a bit of dust had built up behind the CPU fan (in the metal grating between the fan and the heatsink(?) I think. So my initial thought was to unscrew the fan and clear out the dust that way. Halfway through the process of unscrewing the fan (and heatsink I think? again I apologize) I decided I shouldn't do that as I really don't know enough about what I'm doing in case something went wrong. So I decided to screw the fan back down and pick out the dust accumulation with small forceps. When I plugged my computer back in and started it up the fan was blowing like crazy and does so whenever there is even the smallest amount of system load (opening chrome for example).

So today I've downloaded speedfan which shows me the attached results (the one with just the superfan info is essentially idle (http://imgur.com/JcVBcRg) (fan ~2300 RPM) and under heavy load (running a performance test software (fan at ~4200 RPM core temps scary high) (http://imgur.com/3CbUSCX)

Any thoughts? Unfortunately, as I wasn't concerned prior to this incident I don't have any stats to say that the machine is running differently (my only indicator is that the fan seems to be running much harder when under less stress)

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a b à CPUs
May 18, 2013 2:55:08 PM

You created cracks on TIM aka thermal paste by doing that. You need to take the heatsink off now, clean the TIM residue with TIM cleaner or rubbing alcohol, then apply fresh TIM on your CPU and refit the heatsink back on tightly.
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a c 143 à CPUs
May 18, 2013 2:58:31 PM

So my initial thought was to unscrew the fan and clear out the dust that way. Halfway through the process of unscrewing the fan (and heatsink I think? again I apologize) I decided I shouldn't do that as I really don't know enough about what I'm doing in case something went wrong.

You may have dislodged the thermal paste between the CPU and heatsink. Not totally, but enough to make a difference.

The only way to fix is to take it off and reapply.
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May 18, 2013 4:16:45 PM

Hey guys, thanks for your responses. I followed your instructions and now everything is running quietly (and nice and cool). Cheers!
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