Video And Display Problems; If The Display Is Blank; If The Display Is Difficult To Read - Dell Latitude D631 User Manual

Video and Display Problems

Fill out the Diagnostics Checklist (see "Diagnostics Checklist" on page 141) as you complete these
checks.
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
Information Guide
.

If the display is blank

NOTE:
If you are using a program that requires a higher resolution than your computer supports, it is
recommended that you attach an external monitor to your computer.
C —
H E C K T H E B A T T E R Y
depleted. Connect the computer to an electrical outlet using the AC adapter, and turn on the computer.
T
E S T T H E E L E C T R I C A L O U T L E T
device, such as a lamp.
C AC
H E C K T H E A D A P T E R
ensure that the light is on.
C
O N N E C T T H E C O M P U T E R D I R E C T L Y T O A N E L E C T R I C A L O U T L E T
strips, and the extension cable to verify that the computer turns on.
A
D J U S T T H E P O W E R P R O P E R T I E S
Center (click Start→ Help and Support).
S
W I T C H T H E V I D E O I M A G E
switch the video image to the display.

If the display is difficult to read

A
D J U S T T H E B R I G H T N E S S
M
O V E T H E E X T E R N A L S U B W O O F E R A W A Y F R O M T H E C O M P U T E R O R M O N I T O R
system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft) away from the computer
or external monitor.
E
L I M I N A T E P O S S I B L E I N T E R F E R E N C E
appliances.
R
O T A T E T H E C O M P U T E R T O F A C E A D I F F E R E N T D I R E C T I O N
picture quality.
A W
D J U S T T H E I N D O W S D I S P L A Y S E T T I N G S
1 Click the Start button and then click Control Panel.
2 Click Appearance and Themes.
3 Click the area you want to change or click the Display icon.
4 Try different settings for Color quality and Screen resolution.
If you are using a battery to power your computer, the battery charge may be
Ensure that the electrical outlet is working by testing it with another
—
Check the AC adapter cable connections. If the AC adapter has a light,
—
Search for the keyword standby in the Windows Help and Support
—
If your computer is attached to an external monitor, press <Fn><F8> to
—
Press <Fn> and the up- or down-arrow key
—
Turn off nearby fans, fluorescent lights, halogen lamps, or other
—
—
Bypass power protection devices, power
—
If your external speaker
—
Eliminate sunlight glare, which can cause poor
—
Product
97
Troubleshooting