Lockups And Software Problems - Dell Vostro 420 Service Manual

then try using the keyboard.
U N T H E A R D W A R E
R H
page 12.

Lockups and Software Problems

CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
The computer does not start up
H E C K T H E D I A G N O S T I C L I G H T S
C
N S U R E T H A T T H E P O W E R C A B L E I S 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
E
T H E E L E C T R I C A L O U T L E T
The computer stops responding
NOTICE:
You may lose data if you are unable to perform an operating system
shutdown.
U R N T H E C O M P U T E R O F F
T
your keyboard or moving your mouse, press and hold the power button for at least 8 to
10 seconds (until the computer turns off), and then restart your computer.
A program stops responding
N D T H E P R O G R A M
E
1
Press <Ctrl><Shift><Esc> simultaneously to access the Task Manager.
2
Click the Applications tab.
3
Click to select the program that is no longer responding.
4
Click End Task.
A program crashes repeatedly
NOTE:
Most software includes installation instructions in its documentation or on a
CD or DVD.
H E C K T H E S O F T W A R E D O C U M E N T A T I O N
C
the program.
R O U B L E S H O O T E R
T
— See "Power Lights" on page 9.
— If you are unable to get a response by pressing a key on
—
— See "Hardware Troubleshooter" on
— If necessary, uninstall and then reinstall
Troubleshooting
23