What Causes ASUS CPU Fan Error? Best Fixes

Issues with your PC or laptop always come with a fear of losing your documents and media or losing the whole device. While this fear is understandable, sometimes, one need not panic. In the case of the ASUS CPU fan error, it doesn’t always translate to a major issue or a damaged component. It might just be a matter of changing some settings or doing some cleaning.

Luckily for you, this article will explain the common causes of the ASUS CPU fan error and highlight the best fixes to make the nightmare go away. Feel free to let us know which fix worked best for you!

What Causes ASUS CPU Fan Error?

The ASUS CPU fan error can be caused by dust or dirt in the fan which causes the fan to run too slow or stop working completely. It is perfectly normal for your CPU fan to collect dust over time and this is why we highly recommend cleaning the fan occasionally to avoid this error. The ASUS CPU fan error appears when the system is unable to detect the fan, and this can happen when the fan isn’t working as it should. This can happen for a few reasons but dust or dirt is one of the most common reasons why one might encounter the CPU fan error.

Incorrect Connection

You might also encounter a CPU fan error if the processor fan in your device is not connected properly. This can be as a result of dropping the laptop or replacing the CPU fan. The fan could become slightly or completely disconnected if the laptop falls and sometimes during a replacement (especially when done by someone with little or no experience) the fan may not have been connected to the right location or the replacement may not be compatible.

Incorrect Settings

Another reason one might be facing the ASUS CPU fan error is because of incorrect settings in the BIOS interface of the device. You could unknowingly change the settings of the processor fan information in the BIOS interface and this causes the error to pop up continuously even when there is no real issue.

Damaged CPU Fans

If your laptop falls or has fallen a few times before the ASUS CPU fan error, it could mean that the processor fan is damaged or broken. This might cause overheating issues in your device, which can bring about even more issues like delayed computer operation, computer failure, unexpected shutdowns, and much more. In this case, the error comes up to warn you about the damaged fan so you can avoid the more complex overheating issues.

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How to Fix ASUS CPU Fan Error

When trying to fix the ASUS CPU fan error, the first thing you should do is clean the CPU fan. To do this, you should turn off your laptop or PC and disconnect it from the power source. Then open the case, you should only do this if your device is made to be opened. After opening the case, simply use an air gun or canned air to push whatever dust, dirt, or debris that might be stuck in the fan. When this is properly done, you can connect the device to power and turn it ON to see if it worked.

Fix 2: Reconnection

As earlier stated, one of the possible causes for the ASUS CPU fan error is the disconnection of the CPU fan. This can easily be fixed by removing and then reconnecting the fan to the right location. To do this, you would need to confirm that you can fix it without running into problems, otherwise, you should get a technician to do it.

  1. First, turn OFF your computer and disconnect it from power.
  2. Then, remove the case and check that the fan is not loose or disconnected.
  3. If it is, simply remove and reconnect. Then, tighten the screws.
  4. If that doesn’t work, check the location of the fan, the CPU fan should be connected to the CPU header on the motherboard. If it isn’t, simply connect it properly, the CPU header is usually labeled ‘CPU Fan’.
  5. If this step doesn’t fix the problem, check if you have multiple CPU fan headers and try to connect the CPU fan to another header.
  6. After doing this, confirm that the fans are working properly by listening carefully for them, then connect your device to power and turn it ON to check that it works.

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Fix 3: Change Fan Settings in Bios

Another fix you can try when facing the ASUS CPU fan error is to edit some of the fan settings in BIOS. BIOS is an interface that is usually used for troubleshooting and computer maintenance. If you have confirmed that your CPU fans are working as they should but the error still pops up, you can reduce the default fan speed in BIOS.

  1. Boot into BIOS on your device by clicking the F2, F12, or DEL buttons
  2. Go to ‘Advanced Settings’ and navigate to the CPU fan settings
  3. Search for the setting that controls RPM warnings
  4. The default value is usually 600 RPM, you can change this to 300 RPM
  5. Then, save the change, exit BIOS and boot your system

Fix 4: Change CPU Fan

If you notice that the CPU fan in your system is not working at all even after trying to remove and reconnect it, then you should replace it. This is better done with a compatible replacement for your device and motherboard. You may choose to do this yourself or you could take your laptop to an experienced technician.

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Fix 5: Ignore Alert

If you are sure that your CPU fans are working as they should but the error doesn’t go away, you can stop the computer from checking the operation of the CPU fan which will take the error away. You should note that doing this will prevent your computer from detecting overheating issues later on.

  1. Boot into BIOS on your device by clicking the F2, F12, or DEL buttons
  2. Select Power tab and then ‘Hardware monitor
  3. Click on CPU FAN SPEED and switch it to IGNORED
  4. Also, click on CHASSIS FAN SPEED and switch it to N/A
  5. Then, click on POWER FAN SPEED and switch it to IGNORED
  6. Save the changes, exit BIOS and boot your system

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