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76 Troubleshooting
CHECK THE KEYBOARD CABLE — Shut down the computer. Disconnect the keyboard cable and check it for
damage, and firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the keyboard directly to the
computer.
CHECK THE EXTERNAL KEYBOARD —
1
Shut down the computer, wait 1 minute, and turn it on again.
2
Verify that the numbers, capitals, and scroll lock lights on the keyboard blink during the boot routine.
3
From the Windows desktop, click
Start
→
All Programs
→
Accessories
→
Notepad
.
4
Type some characters on the external keyboard and verify that they appear on the display.
If you cannot verify these steps, you may have a defective external keyboard.
TO VERIFY THAT THE PROBLEM IS WITH THE EXTERNAL KEYBOARD, CHECK THE INTEGRATED KEYBOARD —
1
Shut down the computer.
2
Disconnect the external keyboard.
3
Turn on the computer.
4
From the Windows desktop, click
Start
→
All Programs
→
Accessories
→
Notepad
.
5
Type some characters on the internal keyboard and verify that they appear on the display.
If the characters appear now but did not with the external keyboard, you may have a defective external
keyboard. Contact Dell (see "Contacting Dell" on page 135).
RUN THE KEYBOARD DIAGNOSTICS TESTS — Run the PC-AT Compatible Keyboards tests in the Dell Diagnostics
(see "Dell Diagnostics" on page 65). If the tests indicate a defective external keyboard, contact Dell (see
"Contacting
Dell" on page 135
).
Unexpected characters
DISABLE THE NUMERIC KEYPAD — Press <Num Lk> to disable the numeric keypad if numbers are displayed
instead of letters. Verify that the numbers lock light is not lit.
Lockups and Software Problems
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the
Product
Information Guide
.
The computer does not start up
ENSURE THAT THE AC ADAPTER IS FIRMLY CONNECTED TO THE COMPUTER AND TO THE ELECTRICAL OUTLET.
The computer stops responding
NOTICE: You might lose data if you are unable to perform an operating system shutdown.
T
URN THE COMPUTER OFF — If you are unable to get a response by pressing a key on your keyboard or moving your