70
Troubleshooting
FILE LOCATION: S:\systems\Roush ATG\QRG\A00\EN\source\trouble.fm
D E L L C O N F ID E N T IA L – P R E L IM I N A RY 2 / 1 0 /0 8 - F O R P R O O F O N LY
M
O V E
T H E
E XT 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
CO M P U T E R
O R
M O N I T O R
—
If
your external speaker 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 SI B L E
I N TE R F E R E N CE
—
Turn off nearby fans, fluorescent lights,
halogen lamps, or other appliances.
R
O T A T E
T H E
CO M P U T E R
T O
FA CE
A
D I F F E RE N T
D I RE C T I O N
—
Eliminate sunlight
glare, which can cause poor picture quality.
A
D J U S T
T H E
W
I N D O W S
D I S P L A Y
SE T T I NG S
—
Windows XP:
1
Click
Start
→
Control Panel
→
Appearance and Themes
.
2
Click the area you want to change or click the
Display
icon.
3
Try different settings for
Color quality
and
Screen resolution
.
Windows Vista
:
1
Click the Windows Vista Start button
→
Control Panel
→
Hardware
and Sound
→
Personalization
→
Display Settings
.
2
Adjust
Resolution
and
Colors settings,
as needed.
R
U N
T H E
V
I D E O
D I A G N O S T I C S
T E S T S
—
If no error message appears and you
still have a display problem, but the display is not completely blank, run the
Video
device group in the "Dell Diagnostics" on page 52, then contact Dell
(see "Contacting Dell" on page 81).
S
E E
"E
RR OR
M
E S S A G E S
" —
If an error message appears, see "Error Messages"
If only part of the display is readable
C
O N N E CT
A N
E X TE R N A L
MO N I T O R
—
1
Shut down your computer and connect an external monitor to the
computer.
2
Turn on the computer and the monitor, and then adjust the monitor
brightness and contrast controls.
If the external monitor works, the computer display or video controller
may be defective. Contact Dell (see "Contacting Dell" on page 81).
