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CPU Fan Error [ASUS P5Q PRO]

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PhilJackson

Junior Member
Well, my newly built system was running fine for the past week but as I turned it on today, I got a message saying "CPU Fan Error! Press F1 to Resume."

So I restarted the computer to see if that would fix it and it did. The error was gone.

I ran Speedfan and something weird happened. Aux0 and Aux1 have no speed. I opened up the computer and all three Chassis fans and the CPU fan were running fine.

Here's a picture of SF:

http://i41.tinypic.com/166x8jn.jpg

Any clue why the error first occurred and why there is no RPM for the fans? By the way, there are three case fans and one stock Intel CPU fan. I know that at least 1 (can't remember if it was both) of the Aux fans had a speed reading before this.

Thank you.
 
You get the CPU Fan Error if you don't have a fan plugged into the 4-pin PWM fan plug (a 3 pin fan works fine, you just dont' get PWM control) located to the right of the CPU if looking at it from the top. There's a lot of fan plugs on this board, which is great imo, just check your manual to make sure you're using the one specified for the CPU fan.
 
I looked right now and made sure that the one it was being connected to was the CPU Fan plug.


I restarted the computer a few times and the error did not come up but after a few tries, it did come up again.

Any tips?
 
What Q-Fan settings do you have it at in the BIOS? Anything lower than turbo for me would yield a CPU Fan Error.
 
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