Problem with system fan

H

HalfDemon1122

New Member
i just upgraded my motherboard and ever since my cpu fan has been running at full speed all the time. normally it just does that at boot, but it hasnt stopped. the mobo is an asus m2n-sli deluxe. its not that big of a deal, just really annoying
 
Is the fan stock or 3rd party without a controller? The Zalman 9700 runs quiet here on an Asus M2N-E model board with the setting all the way up. You can always add a controller on if you need to.
 
i dont know much about the fan. it came with the computer i had before, and i just switched it to the new motherboard. the only thing different is that the connecter to the motherboard was 3 pin ( like a normal fan) but the mobo had a 4 pin. it could only have gone in 1 way, and it said it would work
 
The default voltage on the other case was lower as well as the board likely automatically adjusting that according to need. The fourth pin is seen on fans with controllers added inline with the fan itself for manually adjusting the speed by raising or lowering the voltages.
 
What cpu are you running? And how are the temps? You might want to look at a good 3rd party hsf to replace that anyways if you running a bit too warm.

For simply lowering the fan speed down you can add a controller on or see if you can lower the voltage setting in the bios. If that was a prebuilt system you simply moved a stock sink/fan into the new system with a board seeing a slightly higher voltage likely meant for a different one altogether.
 
The fan control options are in the BIOS. Try resetting the BIOS to defaults first, then if that doesn't work look at the Qfan controls.
 
It's likely that the fan settings are already at the defaults. The fan may simply be a noisey one which you will end up replacing anyways.
 
What make and model board is that on? The stock fan will simply run at one speed at all times off of the default voltage applied by the board according to the overheat protection circuit. Being a stock not 3rd party hsf lowering the speed will likely see higher cpu temps since it won't offer the same amount of air flow once you slow it down.

That's good! Hopefully it will stay quiet but remember to check the temps.
 
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