158 Troubleshooting
TEST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
C
HECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
M
OVE THE MONITOR AWAY FROM EXTERNAL POWER SOURCES — Fans, fluorescent
lights, halogen lamps, and other electrical devices can cause the screen image to
appear shaky. Turn off nearby devices to check for interference.
R
OTATE THE MONITOR TO ELIMINATE SUNLIGHT GLARE AND POSSIBLE
INTERFERENCE
ADJUST THE WINDOWS DISPLAY SETTINGS
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
Start
→
Control Panel
→
Hardware and Sound
→
Personalization
→
Display Settings
.
2
Adjust
Resolution
and
Colors
settings, as needed.
CHECK THE MONITOR SETTINGS — See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
If only part of the display is readable
CONNECT AN EXTERNAL MONITOR
1
Shut down your computer and connect an external monitor to the
computer.
2
Turn on the computer and the monitor and 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 263
).
Power Lights
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
book.book Page 158 Tuesday, August 28, 2007 10:20 AM
To Next Page
Loading...
