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Sometimes you have to open the computer case to install new memory, new accessory cards, or just to clean out the accumulated dust, dirt, and grime of use. A clean computer works better than one clogged with dust and debris. While you don't want to open the computer case when you don't have to, here are some specific guidelines to follow when you do have to get inside your computer any reason.

Read through the entire handout before opening the computer

• Follow the safe shutdown procedures.

Start>Shut down>Shut down the computer

• Turn off the power.

• Unplug all the cables from the back of the machine.

• Don't worry about getting them in the right place later — they only fit where they are supposed to go.

• Move the tower to a convenient place.

• A counter or table works well.

• Avoid metal tabletops and carpeted areas. This reduces static buildup. These precautions also reduce the risk of static discharges.

• Avoid dragging the machine along carpet. If you, or someone else can, lift it.

• Before opening the case, remove any rings, watches, or metal bracelets you have on.

• Find the anti-static wristband that was sent to you with your network cables and computer locks. Wear the wristband on the hand (wrist) that you use most. Clip the “alligator” end onto the sturdy, unpainted metal frame once you open the machine. Be aware that polyester and wool clothing make you more “static-y”. Remain standing at all times to make you less static-y.

• There are two large gray plastic tabs on the back of the machine (right-hand side). Push them away from one another to release the side panel.

• Now is a good time to “ground” yourself by touching both hands to the metal frame of the computer. This will discharge any static on your body onto the frame, rather than onto the sensitive circuitry inside. Touch the metal frame often while working on the machine.

• If you remove any cards (those rigid green rectangles), try to touch only the edges if possible. The gold connectors on one of the four edges (the edge that fits into the long plastic "bus" on the motherboard or daughterboard) are the most sensitive to dirt and skin oils.

• If you remove a drive (hard drive, CD-ROM drive, floppy drive), place it inside an anti-static bag. Setting it on top of one does no good at all.

• Computer components are very sensitive to metal, static, magnets (including magnetic screwdrivers), water, and skin oils. Keep them happy and they will keep you happy. The motherboard should never make contact with any metal objects (screwdrivers, screws, rings, bracelets).

Cleaning

• Never clean the monitor's screen while it is on or just after it has been turned off.

• The best time to clean it is before you turn it on in the morning.

• If you use screen cleaner, spray the cleaner onto a cloth and wipe the cloth over the screen.

• Single-use cloths in foil packets work well.

• To cut down on static from the screen, wipe it with a fabric softener sheet.

• Whenever the monitor is on, do not touch the screen when using other electronic equipment (such as a telephone).

• Disconnect the keyboard and mouse from the back of the computer before cleaning.

• To clean the mouse ball, remove the ball and then roll it in a damp cleaning cloth.

• Clean fabric mouse pads with a lint brush. Clean plastic mouse pads with a damp cloth.

Putting it back together

• Once you replace the side panel of the computer, replace the large screw in back (you don't need to tighten it with a screwdriver).

• Plug the cords back in.

Note: The one that may be confusing is the headphone cord. It goes in a green hole — but there may be two green holes on the back of your computer. Insert it in the one furthest from the purple hole for the mouse. Cords will only fit where they are supposed to go — if you somehow get them somewhere else, the computer won't explode, it just won't work.

Most cables are color-coded.