Tip & How-To about Computers & Internet

How to reduce fan/revving sound of a somehow old desktop PC

Old (& sometimes new!) computers make annoying and disturbing ventilation sounds that the user can not take it anymore.
Most of the time, it's related to the dust that is 'collected' on the computer's internal components (static electricity and stuff). Cleaning out that dust will not only make your computer quieter, but also slightly better performing (as less dust means less heat, and less heat equals better performance).
I have seen some computers even not start up or barely sustaining a minute of power up before shutting down, because of much dust inside.

1. The whole operation will be done outdoors, as there will be much dust extracted.
2. This is what you will need:
- Domestic Air blower (cool air) or an compressed air duster compressed can;
- Clean piece of cloth;
- Your computer's case (of course).
3. This is what you should NOT use:
- Hair dryer or any hot air blower: the air blown should be cool;
- Paper tissue or some other fabric which leaves behind small particles.

Get your computer on the table, and open the case. Often, it's either a couple of screws or clamps away.
Let your computer rest upwards, vertically: the dust coming off wouldn't get back in easily.
If you're going to use a compressed air duster can, DON'T shake it before spraying: you will mix liquid with gas, and will ruin your computer. This is one of the reasons I prefer an air blower over the compressed cans (which also run out of pressure).
You might, at first, need to stay a little away from your computer, while blowing off the 'first coat' of dust. When no more dust is coming off, spray over the corners and hard-to-get areas, to clear what might remain there.
After doing that, you still have 2 important components to clean: the power supply and the processor. Both will hold an amazing amount of dust, so be careful not to choke :)!
Cleaning the power supply is straight forward: blow air through the vents, from both (or all) sides, until no dust seem to go off anymore. Don't worry if the internal fans start rotating with the air you're blowing: they won't get broken, but they will become clean.
As for the processor, if you're experienced enough, the best way to clean it is to take it apart. But DON'T do it if you don't know what you are doing!!!
The easy way to clean it is just blowing air on its heat sink and fan, until they're clean enough.
Should you choose to take it apart, take off the heat-sink/fan package. Leave the processor in its socket. Clean the heat sink with air blows and then with the cloth. Same thing with the fan. If you have thermal paste, you might as well clean the processor, but if not, don't bother taking it off. After they are clean, put back the heat-sink and the fan on top of the processor and lock them securely.
Close up the case of your computer, and you're done!
Your computer now should be more quiet than before, and as stated earlier, you might even notice a slight increase in its performance!

Posted by on

Computers & Internet Logo

Related Topics:

Related Questions:

1 Answer

lanson smoke alarm

You should buy a new fire alarm. As you mention it also looks annoying to me and think safety first it can confused you if real accident happend.

Mar 14, 2014 | Home

1 Answer

please help! i am having problem i n my facebook. i can login but the page itself does not load completely.the page is almost white.....grrrr...so annoyed...anyone there can help me ASAP

Yes, facebook sometimes doesn't load. Maybe because of the numerous facebook users that sometimes it can't handle anymore just like friendster 5 years ago it's too slow because of many users. Just be patient, or try google chrome maybe it will load there.

Mar 22, 2011 | Facebook Social Network

1 Answer

2000 BMW 323i - new clicking sound under the hood. Is there a common problem for this that I should investigate first?

Is the click engine speed related or is it a slow, regular (electrical) click?
Speed-related click could be many things - some of them expensive. No way to diagnose from here.
Slow click may be the heater valve. They sometimes sit and cycle with an annoying slow click when there is air in the cooling system.

Feb 01, 2011 | 2000 BMW 3 Series

2 Answers


do you mean noise of exahust fan?

May 28, 2008 | Sony PFM-42B1 42 in. HD-Ready Plasma...

Not finding what you are looking for?

277 people viewed this tip

Ask a Question

Usually answered in minutes!

Top Computers & Internet Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

102366 Answers

David Payne
David Payne

Level 3 Expert

14161 Answers

Are you a Computer and Internet Expert? Answer questions, earn points and help others

Answer questions