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CPU Fan control not working

germand
By germand
in Troubleshooting
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Hey everyone!

 

There is an issue with my parents Office-PC:

 

Although I've enabled cool'n'quiet  and set the CPU fan control to "quiet" mode with a target temperature of 65 Celsius in the BIOS, the CPU fans still runs at about 1700 RPM constantly. I have no idea what to change in order to achieve a quiet PC...

 

It seems like the PWM control is not working. I've tested a similar CPU fan and the issue still remains. I don't know since then the issue exists, but at the time then I set up the PC everything worked fine and it was almost inaudible. I've checked the connection and the CPU fan is hooked up to the right header. Also, HWMonitor recognizes the fan and displays the RPMs. The Temperature of the CPU is about 25-30 Celsius under conditions. 

 

The Setup:

 

ASrock a780 fullhd (AM2+)

AMD Athlon X2 4850e

ac freezer 7 pro

4 GB ram

Windows 7 64 bit

 

Do you have any suggestion? An Ideas? I'm happy with any advice! :D

 

Thanks allot!

 

greez Martin

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https://linustechtips.com/topic/33111-cpu-fan-control-not-working/
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Posted (edited)

I would say get a aftermarket cooler. Stock heat sinks are so loud, after switching to CoolerMaster hyper 212 EVO its so quiet! and the temps are going to be lower! its only $35 on newegg.

Edited by Darell3

| CPU: INTEL i5 6600k @ 4.6Ghz @ 1.328v | Motherboard: ASUS Z170-AR | Ram: G.SKILL 2x8GB 2400Mhz | CPU Cooler : Corsair H100i V2

| GPU: GIGABYTE GTX980Ti G1 GAMING | SSD: SAMSUNG 840 EVO 250GB  | Storage: WD 1TB GREEN | OS: Windows 10 Pro 64bit | PSU: FSP 650W AURUM S |

<<<<< BLK-Phant0m >>>>>

 

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Take a look at the hyper 212 evo or if you are on a really tight budget have a look at the arctic cooling freezer pro 7 rev 2, i had one for a while before switching to some other heat sink and for the price its very good and quiet.

My Build  CPU: AMD Phenom II X4 955@4.1@Ghz Mobo: Asus M5A99x Evo R2.0 GPU: Asus 7870T @1.25GHz Core 5.5GHz Mem Ram: Kingston HyperX@ 1600 9-9-9-24 CPU Cooler: H80 Push/Pull Noctua NF-P12  SSD: Samsung 128GB 840 PRO HDD: Mix of drives which add up to 5.6TB SoundCard: Asus xonar DGX PSU: Corsair HX650 + alchemy cables Case: R3 with the rest of the fans being fractel fans.

Im A Snake.....

 

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Hi, is this a 3pin or 4pin fan? If it's a 3pin fan, you can't control the speed through the 4pin connector. If it's a 4pin fan, on intel motherboard, there's a setting in the bios called minimum CPU fan speed, that's where you can lower the cpu fan speed. Can you try to see if there's a similar setting in your bios?

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