Unexpected Characters; Lockups And Software Problems; The Computer Does Not Start; The Computer Stops Responding - Dell Inspiron 1521 Owner's Manual

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
I N T E G R A T E D K E Y B O A R D
1 Shut down the computer.
2 Disconnect the external keyboard.
3 Turn on the computer.
4 From the Windows desktop, click Start
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 175).
R U N T H E K E Y B O A R D D I A G N O S T I C S T E S T S
Keyboards tests in the Dell Diagnostics (see "Dell Diagnostics" on page 99). If
the tests indicate a defective external keyboard, contact Dell (see "Contacting
Dell" on page 175).

Unexpected characters

D I S A B L E T H E N U M E R I C K E Y P A D
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

C H E C K T H E A C A D A P T E R
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.
—
—
Press <Num Lk> to disable the numeric
—
Ensure that the AC adapter is firmly connected to
—
→ All Programs→
Run the PC-AT Compatible
Troubleshooting
C H E C K T H E
,
115