Fix CPU fan speed error on boot [Asus, Megatrends]

Madalina Dinita
by Madalina Dinita
Madalina has been a Windows fan ever since she got her hands on her first Windows XP computer. She is interested in all things technology, especially emerging technologies -- AI and DNA computing in... Read more
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  • You can add a variety of cooling fans to your PC casing but the CPU fan is essential and irreplaceable. That's why it's hard to ignore the CPU fan error on boot
  • This error usually points to either a malfunction of the CPU fan or underperforming in regards to RPM.
  • Check our guide below for all posible solutions and visit our Troubleshooting Boot errors hub for similar issues.
  • Windows 10 is a pretty stable OS now, but that doesn't mean it's out of troubles. Check out our Windows 10 hub for brilliant solutions.
how to fix CPU fan speed error on boot [Asus, Megatrends]
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You can add a variety of cooling fans to your PC casing but the CPU fan is essential and irreplaceable.

That’s why it’s hard to ignore the CPU fan error on boot that some users keep getting.

That error usually points to either a malfunction of the CPU fan or underperforming in regards to RPM.

We have a few tips on how to resolve the error without too much hustle. Check them out below.

How can I get rid of CPU fan error?

1. Lower the default fan RPM in BIOS

  1. Boot into BIOS on your PC.
  2. Navigate to CPU Fan settings. The sections might differ based on your motherboards. Important thing is to look for anything related to the CPU Fan control, usually found in the Advanced settings menu.
  3. Now, locate the setting that regulates RPM warnings. The default value should be around 600 RPM (rotations per minute).
  4. Lower the default value to 300 RPM and save changes.
  5. Exit BIOS and boot into the system.CPU Fan Error On Boot

The best free third-party tool for controlling and monitoring fan speed is SpeedFan. Get it here.

2. Disable CPU Fan speed monitoring in BIOS

  1. Boot into BIOS.
  2. Navigate to the aforementioned Advanced settings.
  3. Look for the Monitoring (Monitor) section.
  4. Change the CPU Fan Speed to Ignore and confirm changes.
  5. Boot into Windows and look for improvements.CPU Fan Error On Boot

3. Check the hardware

  • Check the fan connections. Inspect the motherboard connection.
  • Remove the fan and clean the dust. You can use the pressurized air to clean it.
  • Make sure that the cooling fan is spinning and it works as intended.
  • To reduce the CPU temperatures, re-apply the thermal paste.CPU Fan Error On Boot

After that, all issues with CPU fan error on boot should be gone. However, if the issue persists, take your PC for diagnostics and repair.

Alternatively, you can also replace the cooler which isn’t exactly a complex task.

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Frequently Asked Questions

  • The CPU fan error is a common error message that occurs when starting up your computer. The warning is caused mostly because the computer has shut down because the CPU overheated. Here’s how to change the speed of the CPU fan.

  • You need to reset your BIOS. If you can’t access your BIOS, this guide will help you fix that.

  • Look at it closely when the computer is shut down. If it’s full of dust and dirt, that’s most likely the problem. If the fan is malfunctioning, your CPU will have a higher temperature. Read this guide to solve the CPU heating problem.

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