DELL 5160 オーナーマニュアル

Solving Problems

63

Unexpected Characters

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

The computer stops responding

 

NOTICE: 

You might lose data if you are unable to perform an operating system shutdown.

T

O

 

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 the Start button, point to Programs, point to Accessories, and click 
Notepad. 

5

Type some characters on the external 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 page 101).

D

ISABLE

 

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.

E

NSURE

 

THAT

 

THE

  A C  

ADAPTER

 

IS

  F

IRMLY

  C

ONNECTED

 

TO

  T

HE

  C

OMPUTER

 

AND

 

TO

  T

HE

 

E

LECTRICAL

  O

UTLET

T

URN

 

THE

 

COMPUTER

 

OFF

—

If you are unable to get a response by pressing a key on your keyboard or 

moving your mouse, press and hold the power button for at least 8 to 10 seconds until the computer 
turns off. Then restart your computer.