Tip & How-To about Computers & Internet

Clean up your computer

Clean your computerI have a dirty secret. I've never cleaned my computer. Sure, I've dusted my monitor, but I haven't taken off the cover or tried to reach the crumbs lurking inside my keyboard.

"Your computer could fry if you don't keep it clean," says Jonathon Millman, chief technology officer for Hooplah Interactive.
Dust clogs the vents behind your computer, which causes your CPU to heat up—and heat is the biggest cause of component failure in computers. Regular cleaning could save you costly maintenance fees down the road.
Keep your computer in tip-top shape by following Millman's guide to a spotless computer system.
PreparationYou'll need:

  • screwdriver
  • can of compressed air (available from computer dealers or office-supply stores)
  • cotton swabs (do not use a cotton ball)
  • rubbing alcohol
  • paper towels or anti-static cloths
  • water
Always turn your computer off before you begin and unplug all the cords.
Step 1: Inside the caseUsing a screwdriver, remove the side of the case that's opposite your motherboard. Touch as little as possible inside the computer, keeping fingers away from cards and cords.
Blow air around all of the components and along the bottom of the case, keeping the nozzle four inches away from the machine. Blow air into the power supply box and into the fan (from the back of the case). Lastly, blow air into the floppy disk and CD drives. Wipe the inside of the cover with a lightly moistened cloth before replacing it.
Millman recommends doing this every three months if your case sits on the floor, if you have pets that shed, or if you smoke. Otherwise, every six to eight months is fine.
Step 2: Outside the caseRun a cotton swab dipped in rubbing alcohol around all of the openings on the back of your case. Give them one swipe with the damp end of the swab and one swipe with the dry end. Do this as often as you clean the inside of your computer.
Step 3: KeyboardTurn the keyboard upside down and gently shake it. Most of the crumbs and dust will fall out. Take a can of compressed air and blow into and around the keys. Next, take a cotton swab and dip it in rubbing alcohol. It should be damp, but not wet. Run the cotton swab around the outside of the keys. Rub the tops of the keys. If you have a laptop, follow the same procedure but take extra care with your machine. Do this monthly.


Spills — If you have kids, you're worried about spills. If it happens, disconnect the keyboard immediately and flip it over. Blot the top with a paper towel, blow compressed air between the keys and leave it to air dry overnight. For laptops, liquid can easily penetrate the hard drive so turn the computer over immediately and leave it in that position until it dries.
Step 4: MouseRub the top and bottom of your mouse with a paper towel dipped in rubbing alcohol. Open the back and remove the ball. Wash the ball with water and let it air dry. To clean inside the mouse, dip a cotton swab in rubbing alcohol and rub all of the components. Scrape hard-to-remove grime with your fingernail. Finally, blow air into the opening. Replace the ball and the cover. Do this monthly.
Step 5: MonitorMoisten a paper towel or a soft, lint-free cloth with water. (You can also buy monitor cleaning products at computer-supply stores.) Don't spray liquid directly onto the screen—spray the cloth instead. Wipe the screen gently to remove dust and fingerprints. Never touch the back of the monitor.
For laptop screens, Millman suggests buying a special cleaning solution available at computer stores. Do this weekly.
Finally, make sure that everything is dry before you plug your computer back in.

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1 Answer

have a power brush and cannot get the brush out to clean. I've taken off the main cover, but the brush is held in by a bracket. I can't take off the main cover as I don't have the right kind of screwdriver, it's not an ordinary phillips or cross head screw. Any idea?


I have a Miele STB-205-3 Turbobrush. After opening the brush cover using a quarter, I use a T-7 torx screw driver (shaped like star of David) to remove the main cover that is held by 4 screws.

There are 2 more screws holding the fan housing. After unscrewing them, you can take the whole thing apart and clean it. Make sure you clean all rotating parts as they collect a lot of hair, dust, etc,

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Video and images too dark


You can try this. Open the cover (Unplug the monitor and leave at least for 30 minutes before doing this). See whether dust is there. If there is dust, get a 1" paint brush and gently remove the dust with the brush. Always sweep the dust away from the unit. If black dust is present around certain cables and around the flyback transformer (that black box covered with aluminium plates), use a soft cloth to wipe them (do not wet the cloth). *Make sure you dont turn those rings on the back of the tube while wiping the the dust. After cleaning the dust, replace the cover, connect it to the PC and check. You will have a brighter picture!

Jun 01, 2009 | LG Studioworks 563N 15" CRT Monitor

2 Answers

Apple Cinema Display 23" HD - Dust on inside of screen.


Well, I pretty much knew that the display would have to be disassembled to clean the dust out. I should have been more specific by asking if the display "could" be taken apart to clean it out, especially since the dust is in between the image and light source layers.

Jan 15, 2008 | Apple Cinema Display 23" HD Monitor

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