[Solved] System won’t Power Up but Hear CPU Fan is Running

System Won't Power Up But CPU Fan Is Running

In this article, we will discuss with you how to fix a computer that Fan is spinning but the system won’t power up. You press the power button and see the lights are not ON but hear a cooling fan sound.

This usually means, your computer receives some amount of AC power. Well, let’s check the basic troubleshooting steps to solve this issue.

Steps to Fix a Computer that CUP Fan Spin but System does Not Power Up


  1. Use a Multimeter or Tester to confirm that there is enough AC voltage at the Wall Mount.
  2. Check the AC cord connectivity using a Multimeter.
  3. Check whether Power Supply Cables are attached properly to the Motherboard
  4. Use a Multimeter to verify that each output from the Power Supply is correct.
  5. If any output found low or absent, replace the Power Supply and again verify all the output.
  6. If all output gives proper AC power, then change the Processor.

I hope these steps will help to solve the “CPU Fan spinning but Computer won’t power up” issue. if still you facing any issue, comment below.

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