Lockups And Software Problems; The Computer Does Not Start Up; The Computer Stops Responding; A Program Stops Responding - Dell Dimension U7021 Owner's Manual

T E S T T H E K E Y B O A R D
keyboard.
R U N T H E H A R D W A R E

Lockups and Software Problems

CAUTION:
located in the Product Information Guide.

The computer does not start up

C H E C K T H E
E N S U R E T H A T T H E
L E C T R I C A L
E

The computer stops responding

NOTICE:
T U R N T H E C O M P U T E R O F F
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.

A program stops responding

E N D T H E P R O G R A M
1
Press <Ctrl><Shift><Esc> simultaneously.
2
Click Applications.
3
Click the program that is no longer responding.
4
Click End Task.
42
Solving Problems
— Connect a properly working keyboard to the computer, and try using the
T R O U B L E S H O O T E R
Before you begin any of the procedures in this section, follow the safety instructions
— See page 53.
D I A G N O S T I C L I G H T S
P O W E R C A B L E I S
U T L E T
O
You might lose data if you are unable to perform an operating system shutdown.
— If you are unable to get a response by pressing a key on your keyboard or
—
— See page 64.
F I R M L Y C O N N E C T E D T O T H E C O M P U T E R A N D T O T H E