How to quiet a computer fan

Written by amanda dyar
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How to quiet a computer fan
Replace a bad CPU fan to stop the noise in your computer. (pc lüfter image by pmphoto from

A noisy fan in your computer usually indicates that it is not working properly. To fix a noisy fan, use a drop of oil for a quick-fix, or replace the fan. It is important to keep the fans working; there are three computer fans in your PC that run simultaneously to keep the system from overheating.

Skill level:

Things you need

  • Sewing machine oil
  • CPU fan
  • Phillips screwdriver

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  1. 1

    Turn the power off to your computer. Open your computer case. Use a Phillips screwdriver to remove the screws holding the case together. Look for the three computer fans inside your computer once you have removed the side panel. Trace the power cable to each fan and unplug all but one. Boot up your computer to gauge the noise level and repeat this process until you find the damaged fan.

  2. 2

    Remove the noisy CPU fan and add drop of oil. Use the Phillips screwdriver to remove the four mounting screws and detach the fan's power cable. Lay the fan on a flat surface and peel back the sticker on the back of the fan. Pull out the rubber plug to find the lubrication well under the sticker. Pour one drop of sewing oil into the hole and replace the rubber plug and sticker. Mount the CPU fan back into your computer.

  3. 3

    Replace the noisy computer fan to prevent the problem from reoccurring. Screw in the new computer fan in the original place of the old fan. Reattach the power cable to the new computer fan and boot up your computer to make sure it is working properly.

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