Dell Precision M6300, User Manual

Page: 158 / 292

158
Troubleshooting
T
E S T T H E E L E C T R I CA L O U T L E T
—
Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
C
H E C K T H E M O N I T O R S E TT I N G S
—
See the monitor documentation for instructions
on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor,
and running the monitor self-test.
M
O V E T H E MO N I T O R A W A Y F R O M E XT E R N A L P O W E R SO URC E S
— 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
O T A T E T H E MO NI T O R T O E L I MI N A T E S U N L I G H T G L A RE A N D P O SS I B L E
I N T E RF E R E N CE
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
Start
→
Control Panel
→
Hardware and Sound
→
Personalization
→
Display Settings
.
2
Adjust
Resolution
and
Colors
settings, as needed.
C
H E C K T H E M O N I T O R S E TT I N G S
— 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
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 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