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How to Clean a Desktop Computer

Posted May 20, 2008 12:01 PM by Baxter

It seems like everyone has a computer these days. They're a great tool for productivity and entertainment. Some people leave their desktops on for days. There's no problem with this, but there can be over time if you aren't careful.

Like many of other people, my desktop computer sits on the floor of my room. Inside any desktop, there are fans to keep different parts at ideal operating temperatures. Over time, these fans get quite dirty. Eventually, dust, hair and other fibers start to affect their performance. Fortunately, there's a simple fix that takes only about twenty minutes to complete and cost about five dollars. For starters, you'll need to get a can or two of condensed air.

I recommend that whenever you work on a computer, you do so in a non-carpeted area because static electricity can damage components while you're working in the case. Also, for about five dollars, static bands are available that assist in static safety. For this procedure, I recommend working in a garage or outdoors - somewhere you won't mind dust getting everywhere.

First, unplug the computer. Once the computer is unplugged, hold the power button for about five seconds so that all other power in the case is discharged. Now unscrew the sidewall of your computer so that you can easily access the components inside the case. With the case open, you're able to see most of the fans inside. The most important fan to maintain is the CPU (central processing unit) fan; but to do this, it must be unplugged from the motherboard and removed from the case.

Follow the wire from the fan to the motherboard and unplug it. Then detach the fan from the motherboard. Processor fans are all different, so the clipping-style varies. Once the fan is removed, spray it with the can of condensed air, removing months of dust accumulation. Then reattach the fan the same way you removed it.

There are some others fans you'll want to clean, too. Power supplies have large fans built into the bottom of them. Give it a spray with the condensed air. Hard-drive bays may also have a fan or two. Give them a spray. If you see a fan in your case, chances are its filthy with dust and fibers, so clean them off.

Once you finish spraying all the fans with the condensed air, look at the bottom of the case. Chances are there's a lot of dust on the bottom that collected while cleaning the other fans. So make sure you get that out of there, too. Before you screw the side back on the case, make sure that anything you unplugged is plugged back in and that anything you detached is reconnected. Screw the side back on and you're done.

I recommend that you clean out your case every four months if you are a heavy user, and every eight months if you aren't. If your computer sits on carpet at home, place a piece of wood under it just so it's off the carpet and further from those fibers. These simple steps for upkeep will keep your desktop running at the proper temperature, and put less stress on the fans themselves. Keep your computer happy. Save yourself a headache.

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#1

Re: How to Clean a Desktop Computer

05/20/2008 1:14 PM

If the CPU heatsink is permanently attached to the fan do not forget to apply a thin layer of thermal grease to the CPU first.

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#2

Re: How to Clean a Desktop Computer

05/21/2008 1:33 AM

Just to add. 1. Be very careful when using air from a compressor. The air will most likely contain fine particles of water and you don't want that on your motherboard. 2. Be careful blowing air over fans as you can make them spin to fast and damage the life of the unit. 3. Air blowers (so I have heard) can generate static, which in turn can damage your pc. Rather just use a soft paintbrush to remove all the dust you can see.

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#3

Re: How to Clean a Desktop Computer

05/21/2008 5:10 AM

I've just replaced the fans in my PC with quieter ones. When I took the CPU fan off I was surprised to see that the heatsink fins were almost completely blocked with crud. I didn't have any problems with overheating but the heatsink must have been almost completely ineffective.

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#4

Re: How to Clean a Desktop Computer

05/21/2008 8:47 AM

The compressed air definitely has some some moisture to it, but at the same time there really isn't any reason to be pointing it at your motherboard. I haven't heard anything about the can creating static but I'll look it up and see what I can find.

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#5

Re: How to Clean a Desktop Computer

05/22/2008 2:45 PM

Also..NEVER, NEVER, NEVER use any kind of silicon(e) based cleaner or 'polish' i.e Armor-all, as the silicone will migrate into, onto and become part of every semi-conductor in your system which will, in no-time at all, render your computer worthless.

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#6

Re: How to Clean a Desktop Computer

06/07/2008 11:17 PM

I keep all my PC's away from the floor, as if it would really matter in my home. There are five (5) German Shepherd Dogs and two (2) humans who make plenty of dust, lint, and dander. My solution? The large Shop-Vac that I use for removing dust and dog hair.

The PC's get filthy; especially in the area of the air vents and fan. Periodically I remove the internal chassis from the shell and take both sections outside. I wipe and vacuum the shell and use the forced air end of the shop vacuum to blow the dust from the internal parts-being very mindful to not force dust into any tiny crevices around the hard drive. I am very careful to not touch the chassis with the plastic hose, as a static discharge might be very severe.

The CD-ROM/DVD slots are usually quite dusty as well, because air flows through them. I pay these special attention, but again I watch the air pressure and flow.

The keyboard gets nasty as well, but by removing a few screws I can separate the keys from the membrane, and clean everything easily. I have seen the keys become so dirty that I soaked them in a Simple Green and water solution and air-dryed them. It is important to have another keyboard handy so one gets the keys in their correct spots-the FIRST time.

Best Regards,

Ing. Robert Forbus

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#8
In reply to #6

Re: How to Clean a Desktop Computer

06/09/2008 4:35 AM

The firm my son works for have just built a new office & moved all of the PCs into cabinets because the owners have 4 English Mastiffs. They had a habit of leaning against the front of the PCs & occasionally hitting the CD drawer button, one small tap from a big paw was enough to snap the drawer off.

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#9
In reply to #6

Re: How to Clean a Desktop Computer

06/10/2008 11:23 AM

I would be too afraid to use a vacuum at any point. The static risk is just too high for me and from what I've read online it's really messed peoples machines up who don't even think about the risk. If there's any place for you to put the computer up on a desk or table you'd be able to space your cleaning out a bit more, but I know there's not always space. Is there any specific way you clean the Optical Drives?

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#7

Re: How to Clean a Desktop Computer

06/08/2008 11:10 PM

So throwing it out in the parking lot and using a pressue washer is a no no?

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#10
In reply to #7

Re: How to Clean a Desktop Computer

06/10/2008 11:31 AM

Won't it fit in the dishwasher?

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#11
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Re: How to Clean a Desktop Computer

06/11/2008 3:18 AM

What about the bathtub! Cleans up automobile parts, why not computers! (best done when mamma is not home) James

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