Clearing cmos settings, Cleaning your computer, Computer, keyboard, and monitor – Dell Dimension E521 User Manual
Page 119
Appendix
119
Clearing CMOS Settings
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions located in the
Product Information Guide.
1 Follow the procedures in "Before You Begin" on page 61.
NOTE:
The computer must be disconnected from the electrical outlet to clear the CMOS setting.
2 Reset the current CMOS settings:
a
Locate the 2-pin CMOS jumper (RTCRST) on the system board (see "System Board
Components" on page 65).
NOTE:
When you receive your computer, there is no jumper plug on the CMOS jumper.
b
Remove the jumper plug from the password jumper (PSWD) pins 1 and 2.
c
Place the jumper plug on the CMOS jumper (RTCRST) pins 1 and 2 and wait approximately five
seconds.
d
Remove the jumper plug and replace it on the password jumper (PSWD) pins 1 and 2.
3 Replace the computer cover (see "Replacing the Computer Cover" on page 105).
NOTICE:
To connect a network cable, first plug the cable into the network port or device and then plug it into the
computer.
4 Connect your computer and devices to electrical outlets, and turn them on.
Cleaning Your Computer
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions located in the
Product Information Guide.
Computer, Keyboard, and Monitor
CAUTION:
Before you clean your computer, disconnect the computer from the electrical outlet. Clean your
computer with a soft cloth dampened with water. Do not use liquid or aerosol cleaners, which may contain
flammable substances.
•
Use a vacuum cleaner with a brush attachment to gently remove dust from the slots and holes on your
computer and from between the keys on the keyboard.
NOTICE:
Do not wipe the display screen with any soap or alcohol solution. Doing so may damage 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 antistatic coating.
•
Wipe the keyboard, computer, and plastic part of the monitor with a soft cleaning cloth moistened
with a solution of three parts water and one part dishwashing detergent.
Do not soak the cloth or let water drip inside your computer or keyboard.
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