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Power supply fan is makeing a lot of noise - Computers & Internet

Posted by steveaobrien on

  • Nicoline Jun 13, 2008

    Suddenly the fan started making a lot of noise but the computer seems "dead". What's going on?

  • Anonymous Jul 17, 2008

    Once the computer warms up the hard drive starts with the fan noise. It drives me crazy. I keep turning the computer off when done with it.



2 Answers


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1) Unplug the power cord and give the fan a good cleaning
with a soft paint brush and a vacuum cleaner.

i.e. Let the fans spin up by the vacuum and than bring
the brush against it.

2) If this fails, it's time to replace the fan:

a) Upgrade or replace the power supply enclosure with more
power/higher quality.

This is usually a good investment anyway.

b) Replace the fan only as described below:

Unplug the power cord

Open up the computer (remove sides)

Unplug all the power supply harnesses from
the mother board, drives and chassis fans.

Unscrew and remove the complete power supply
enclosure at back of computer (ie top of the tower)

Vacuum it out as much as possible.

Disassemble the power supply enclosure by removing
more screws and removing the metal cover.

Unplug the fan from the circuit board, remove it
and take it to a computer store/ builder.

buy another fan just like it

reverse the process to put your computer back together.

1) A new power supply should cost $65 to $120
depending on power and quality. The bigger the better.

But make sure it fits mechanically into the existing chassis
and that the AT generation matches ***********-board.

2) A new fan should cost $15 to $25. Makes sure it runs on
the same voltage, and that it is physically compatible.


Posted on Apr 24, 2008



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The motherboard may have the bulging capacitor issue.
The fan is getting no instruction from the mobo so just goes spin crazy.
Do you have a solid amber or flashing amber power LED?

Posted on Jun 22, 2009


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Larry Chandler

  • 1149 Answers

SOURCE: acer m5100 desktop fan is making noise

Often, just dust can make fans noisy. You can unplug everything, take the side cover off of your tower, and blow it out with a can of the air duster you can buy at a computer store, paying close attention to the fans. If you are not comfortable with this, a local shop should be able to clean it up for you for not a lot of cash, and if a fan is really bad, they could identify which one it is for you too.

Posted on Oct 26, 2009

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My desktop computer will display anything when turned on, and the fan and hardrive both make a loud constant noise.

Maybe you need a larger power supply depending on if you might have added more hardware such as a graphics card, or an extra monitor to your system. This sometimes results in an inefficient supply of power, making your fan to your power supply work harder, thus making noise.

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