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How To Fix CPU Fan Error In Asus Motherboard

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A standard CPU fan

When you newly install a new fan on your Asus motherboard, chances are that you will receive an error message like this. The fan will not likely show up on your dashboard and the challenge of using it comes to hand, so how do you correct this issue? 

The situation is still the same with old fans that might stop working for a host of reasons, there are a host of reasons behind this kind of error message and some of it can come from the wrong installation of the CPU fan l, malfunctioning CPU fan or possibly non-compatible RPM. 

Whatever is the cause, there is a way out of it and you can have your fan running again at its best pace. In this article, we have outlined 5 ways you can get rid of this issue and have your computer running smoothly again. 

5 ways to fix CPU fan error in Asus Motherboard


1. Re-install the CPU Fan 

One of the possible causes of the fan error message you are receiving could be because your fan is not properly seated in the right position, right there on your motherboard. Sometimes this problem sends in the “Post Fan Error” on your screen and it leaves you hanging for a lot of reasons. 

Get to work by re-installing the CPU fan, almost all the time this option works the magic and it will have your CPU fans running smoothly again after a short interval. There is nothing to worry about here, get down to your installation options and you are good to go. 

Also, ensure your screws and pins are in the right place on your CPU, one missing screw or one improperly positioned screw can cause the headache that keeps your CPU fan on low. Check for all of this, cross all the T’s here, and dot your I’s to ensure everything is where it is supposed to be. 

If this option does not seem to give the right results for you, then you need not worry, we have got a long list of other options to try. So keep the shots alive. 

2. Examine your hardware: 

One unconnected wire or a screw you failed to bolt could be the reason for your CPU Fan error message. How could you have forgotten to get the right things in place? It is nothing to worry about, as we all have the days where we forget to do the necessary and this is not out of neglect. 

So examine your hardware, inspect it to see if there are missing links and you have got to fix them to have your entire hardware running smoothly again. Sometimes dust or carbon can get into your hardware and stop the fan from working, where this is the case, routine maintenance is needed. 

Use compressed air to clean the dust-infested areas, while doing this ensure there is no dust on your connectors, and where you can see carbons, take them out before they take down your CPU Fan. If you get this right your CPU fan should be running, if not then let’s try another option. 

3. Manually adjust your Fan RPM 

You may be installing a fan from another brand, the reality is that your BIOS will not recognize it and when this happens, your fan will not run. The CPU fan error message will continue to linger on your screen. Where this is the case, you have got a lifeline to try. 

Go to your BIOS and search for “CPU FAN Speed Low Limit” the default value for this is usually 600RPM, it won’t work if your fan is not an Asus default brand, so set the value to 200RPM. By doing this you will have your CPU fan running at its best again and you are surely good to go. 

Where this fails, we have got other options for you to try. 

4. Disable your CPU Fan Speed in BIOS: 

This is another fantastic way of getting your CPU Fan working again, and it works for everyone. The list is not a closed one, as we might have some exceptions here. Here is how you get into your BIOS and get your CPU fan error issues rectified for good.

Go to BIOS and then advanced settings, search for the monitor section, and once there, change the CPU fan speed. Save the settings and restart your computer to get the settings affected so you can have your computer fans working again at full gear. 

5. Update your BIOS 

Simple things such as updates can be the reason why your CPU fan is not working and the sad reality here is the risk you stand when your fans are not working. Heat can render your entire working operations useless, your computer can go blink when your fans are not working. 

Update your BIOS and you are good to go, it could be that you are running on an older version of BIOS, update it and you are in safe hands again. Your computer will get to run at its best gear and you will be good to go again. Look for updates and get your CPU fans running again.


A faulty CPU cooler or a motherboard connector can be bad for little issues such as CPU fan error. Getting it to work again will have your computer running smoothly again, and this is what you want. Here are 5 ways you can get this result going and you are sure of working at your best again. 

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Tamunotonye Alapu Babbo

Tamunotonye Alapu is a seasoned content writer, with expertise in writing, he possesses a penchant for research and he is available to work at all times.

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