Personal Computer User Manual

Keyboard Problems

If you are having trouble with the keyboard, check the

following:

If the screen displays a keyboard error when you turn on or

reset the computer, make sure the keyboard is securely

connected to the computer. See “Connecting the

Keyboard” in Chapter 1 for instructions.

If nothing happens when you type on the keyboard, see

“The Computer Locks Up,” earlier in this appendix.

3. If the cursor keys do not work properly, the Num Lock

function may be on. When Num Lock is on, the numeric/

arrow keys on the numeric keypad work only as numbers.

Check to see if the Num Lock indicator in the upper right

corner of the keyboard is lit; if it is, press the Num Lock key

to turn off the function.

Monitor Problems

For monitor problems, check the following:

If there is no display on the screen, check that the monitor’s

power switch is on and that the power light on the monitor

is lit. If the power light is on but you still do not see

anything on the screen, check the monitor’s brightness and

contrast controls.

If the power switch is on but the power light is not, turn off

the monitor’s power, wait five seconds, and turn the power

back on. Wait a few seconds to see if the screen displays any

text.

A-8

Troubleshooting