CPU Fan Error "Press F1 to Resume" – How to Fix It

The “CPU Fan Error Press F1 to Resume” message appears during startup and signals an issue with your CPU fan. This error usually means the BIOS isn’t detecting proper cooling, which can lead to overheating and potential hardware damage. Let’s go through the steps to resolve this error and get your computer back to normal operation.

Common Causes of the “CPU Fan Error”

  • The CPU fan is unplugged or connected incorrectly.
  • Incorrect fan monitoring settings in the BIOS.
  • Physical damage to the fan or dust buildup affecting its performance.
  • Issues with the motherboard preventing it from detecting the fan properly.

Step-by-Step Solutions to Fix the CPU Fan Error

1. Check the Fan Connection

First, ensure that the CPU fan is properly connected to the CPU_FAN header on the motherboard. If the cable is loose or connected to the wrong header, the computer might not detect the fan, causing the error.

2. Clean the Fan of Dust

Dust buildup can disrupt the fan’s operation. Turn off the computer, open the case, and carefully clean the fan. Use compressed air or a soft brush to remove dust without damaging the blades or motherboard.

3. Adjust BIOS Settings

This error often occurs due to low fan speed thresholds in the BIOS. Access your BIOS settings (usually by pressing Del or F2 at startup) and follow these steps:

  • Go to the Hardware Monitor or PC Health Status section.
  • Ensure that the CPU Fan Speed setting is set to “Automatic” or “Enabled.”
  • If needed, adjust the minimum fan speed to around 200–300 RPM.

4. Update the BIOS

Older BIOS versions might have bugs causing fan detection issues. Visit your motherboard manufacturer’s website to see if there’s a BIOS update available for your model. Updating may resolve the fan recognition problem.

5. Replace the Fan or Consult a Technician

If none of the previous steps worked, the problem may be with the fan itself or the CPU_FAN header on the motherboard. Try connecting a different fan to the CPU_FAN header. If the error persists, it’s best to consult a service technician for further diagnosis and potential repairs.