Keyboard Problems; External Keyboard Problems - Dell PP21L Owner's Manual

N E X P E C T E D I N T E R R U P T I N P R O T E C T E D M O D E
U
memory module may be loose. Run the System Memory tests and the Keyboard Controller test in the
Dell Diagnostics. See "Dell Diagnostics" on page 57.
X I S N O T A C C E S S I B L E
: \
A R N I N G A T T E R Y I S C R I T I C A L L Y L O W
W : B
connect the computer to an electrical outlet. Otherwise, activate hibernate mode or shut down the
computer.

Keyboard Problems

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
NOTE:
Use the integrated keyboard when running the "Dell Diagnostics" on page 57 or the system setup program.
When you attach an external keyboard, the integrated keyboard remains fully functional.

External Keyboard problems

NOTE:
When you attach an external keyboard, the integrated keyboard remains fully functional.
H E C K T H E K E Y B O A R D C A B L E
C
damage, and firmly reconnect the cable.
If you are using a keyboard extension cable, disconnect it and connect the keyboard directly to the
computer.
C H E C K T H E E X T E R N A L K E Y B O A R D
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 the Start button→ Programs→ Accessories, and click 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.
O V E R I F Y T H A T T H E P R O B L E M I S W I T H T H E E X T E R N A L K E Y B O A R D
T
1 Shut down the computer.
2 Disconnect the external keyboard.
3 Turn on the computer.
4 From the Windows desktop, click the Start button→ Programs→ Accessories, and click 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. See "Contacting Dell" on page 112.
66
Solving Problems
—
H E D E V I C E I S N O T R E A D Y
. T
The battery is running out of charge. Replace the battery, or
—
Shut down the computer. Disconnect the keyboard cable and check it for
—
—
The keyboard controller may be malfunctioning, or a
Insert a disk into the drive and try again.
—
C H E C K T H E I N T E G R A T E D K E Y B O A R D
, —