240 Cleaning Your Computerw w w . d e l l . c o m | s u p p o r t . d e l l . c o mBefore Cleaning Your ComputerCAUTION: Before you begin any of the procedures in this section, follow thesafety instructions in theSystem Information Guide.1 Shut down the computer through the Start menu.2 Ensure that your computer and attached devices are turned off. If your computer andattached devices did not automatically turn off when you shut down your computer,turn them off now.NOTICE: To disconnect a network cable, first unplug the cable from your computer and thenunplug it from the network wall jack.3 Disconnect any telephone or telecommunication lines from the computer.4 Disconnect your computer and all attached devices from electrical outlets, and thenpress the power button to ground the system board.Computer, Keyboard, and Monitor• Use a vacuum cleaner with a brush attachment to remove dust from the slots andholes on your computer and between the keys on the keyboard.NOTICE: Do not wipe the monitor screen with any soap or alcohol solution. Doing so maydamage the antiglare coating.• To clean your monitor screen, lightly dampen a soft, clean cloth with water. If possible,use a special screen-cleaning tissue or solution suitable for the monitor’s antistaticcoating.• Wipe the keyboard, computer, and plastic part of the monitor with a soft cleaningcloth moistened with a solution of three parts water and one part liquid dishwashingdetergent. Wipe off stubborn stains with a cloth lightly moistened with isopropylalcohol.Do not soak the cloth in the solution or let the solution drip inside your computer orkeyboard.MouseIf your screen cursor skips or moves abnormally, clean the mouse. To clean a non-opticalmouse:1 Turn the retainer ring on the underside of your mouse counterclockwise, and thenremove the ball.
