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Unstable CPU Fan, Please Help.


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#1 kevdit

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Posted 29 January 2015 - 05:08 AM

Hello,

 

I've been having this problem with my CPU fan ever since I've build my computer and I can't seem to figure out what's wrong.

 

I'm using an after market cpu cooler and pwm fan (hyper evo 212).  The CPU fan will start stable but overtime in a matter of maybe half a day to a day just ramp up all the way to max rpm.  Sometimes, it will ramp up to max rpm, then die.  Sometimes, the cpu fan will just die and not turn back on.  

 

I've checked the bios and this happens regardless of what Smart fan mode its on (quiet/aggresive).  

I've replaced the CPU fan with another pwm fan and still have the same problem. 

I've replaced the CPU.

I've even replaced the motherboard with an identical one with the same problem. 

I've tried using programs like speedfan to see if it'll work, but same problem. 

When using HW monitor to monitor rpm / temperature, the cpu fan would actually disappear from HW monitor and then it would ramp up to full rpm.  

 

The only thing I haven't replaced is the PSU but I dont know if this is the problem.  The computer works fine its just that problem with the erratic cpu fan.    Any help would be greatly appreciated.

 

 

 

 

 

AMD FX 6300

Hyper Evo 212

RipJaws 4gb 2x

Biostar Ta970 motherboard

R9 280 GPU

Corsair CX 500 W PSU


Edited by kevdit, 29 January 2015 - 05:18 AM.


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#2 ranchhand_

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Posted 29 January 2015 - 03:56 PM

I only had this happen to me once and I finally figured out that I had not installed all of the motherboard drivers that came with the board; once I reinstalled them and made sure that nothing was missed the CPU heatsink fan quieted right down. This was a liquid cooled unit from ECO, I don't know if that applies to all brands of fans.


Help Requests: If there is no reply after 3 days I remove the thread from my answer list. For further help PM me.


#3 kevdit

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Posted 29 January 2015 - 06:34 PM

I only had this happen to me once and I finally figured out that I had not installed all of the motherboard drivers that came with the board; once I reinstalled them and made sure that nothing was missed the CPU heatsink fan quieted right down. This was a liquid cooled unit from ECO, I don't know if that applies to all brands of fans.

 

Thanks for the reply,

 

I ran the software that came with the motherboard and it says the only drivers I'm missing are: Raidxpert Driver, Realtek Network Chip  Driver, and Realtek HD Audio Driver, non which have to do with the cpu or cpu fan.   Should i install these anyways?  



#4 ranchhand_

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Posted 29 January 2015 - 07:53 PM

I'm just guessing here, but those would not seem to affect your problem. Other than testing your power supply, I can't see any other possibility. Sorry.


Help Requests: If there is no reply after 3 days I remove the thread from my answer list. For further help PM me.





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