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CPU fan is getting loud and going at alarming speeds


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#1 Axmann

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Posted 31 January 2012 - 01:51 AM

Lately, my computer's CPU fan (I'm assuming CPU fan, as I'm fairly certain it's not my GPU fan) has been getting very loud when I play games or do anything that would put stress on it. I've had this computer for about 2 years.

I used a utility to see what my CPU fan was going at when it was quiet and when it was loud. The results were pretty alarming.

Quiet CPU Fan:
http://i.imgur.com/QFKGP.png

Loud CPU Fan:
http://i.imgur.com/7SPrW.png

Now, I don't know much about hardware, but this problem is annoying and also frightening.

What should I do?

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#2 dif

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Posted 31 January 2012 - 02:18 AM

What Processor have you got ? Have a look at the heatsink has it got a thick layer of dust on the top ?

I carefully use tweesers to collect all the dust (it should clump together) and pull it out. DO NOT use a vacuum cleaner, i have seen to many dead/tempramental computers that have been vacuumed.

#3 Axmann

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Posted 31 January 2012 - 03:13 AM

What Processor have you got ? Have a look at the heatsink has it got a thick layer of dust on the top ?

I carefully use tweesers to collect all the dust (it should clump together) and pull it out. DO NOT use a vacuum cleaner, i have seen to many dead/tempramental computers that have been vacuumed.

I have an AMD Phenom II x4. I took the case off, and the top of the heat sink was caked with dust, but the sides looked fine. I took the lint off of the top of the heat sink, and it seems to have dramatically improved temperature down there (55-56 degress celsius, but it's better than the 67 degrees i had before). I'm still not sure if that will completely remedy the problem though. I'll watch it and keep you guys posted. Thanks so far though :)

#4 synergy513

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Posted 31 January 2012 - 01:01 PM

another consideration..if the CPU heatsink was jammed with coagulated dust then the CPU fan bushing/bearing/blades are sure to also be impacted. check to see if your fan has a 3 pin or 4 pin connector and the millimeter diameter. check into getting a replacement and/or cleaning techniques recommended for your existing cpu fan. 40-50 celsius is normal CPU operating temps the last time i checked.

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#5 rotor123

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Posted 01 February 2012 - 11:44 AM

Your fan is temperature controlled. Thus the lack of cooling from the dust buildup caused the fan to race.

I use the cans of air to blow out the dust.

Look carefully at the top of the fins they should be completely clean if not using the canned air and a small brush, like a artists brush, Carefully reach in and while blowing the air in brush the top of the fins to dislodge and dust. Oftentimes the dust will build up where the plastic part of the fan blocks your view.

If it still runs warm consider getting some Arctic Silver thermal compound and and pulling the heatsink to redo the compound. Excessive heat can damage it.

I use 90+ Isoproplyl Alcohol to clean all traces of the old thermal compund. be sure not to spill it into the computer as it still has some water in it.

Look up how to aplly the thermal compund before doing it if you are unsure. Too much is as bad as too little.

Good Luck

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