Troubleshooting
73
No sound from headphones
C
HECK
THE
HEADPHONE
CABLE
CONNECTION
—
Ensure that the headphone cable is
securely inserted into the headphone connector (see "Front and Back View of the
Computer" on page 15).
A
DJUST
THE
W
INDOWS
VOLUME
CONTROL
—
Click or double-click the speaker icon
in the lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted.
Video and Monitor Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
NOTICE:
If your computer came with a PCI graphics card installed, removal of the
card is not necessary when installing additional graphics cards; however, the card
is required for troubleshooting purposes. If you remove the card, store it in a safe
and secure location. For information about your graphics card, go to
support.dell.com.
The screen is blank
NOTE:
For troubleshooting procedures, see the monitor’s documentation.
The screen is difficult to read
C
HECK
THE
MONITOR
CABLE
CONNECTION
—
• Ensure that the monitor cable is connected to the correct graphics card (for dual
graphics card configurations).
• If you are using the optional
DVI-to-VGA
adapter, ensure that the adapter is
correctly attached to the graphics card and monitor.
• Ensure that the monitor cable is connected as shown on the setup diagram for your
computer.
• Remove any video extension cables and connect the monitor directly to the computer.
• Swap the computer and monitor power cables to determine if the monitor’s power
cable is defective.
• Check the connectors for bent or broken pins (it is normal for monitor cable
connectors to have missing pins).
book.book Page 73 Tuesday, November 27, 2007 10:29 AM
Summary of Contents for XPS 420
Page 58: ...58 Setting Up and Using Your Computer book book Page 58 Tuesday November 27 2007 10 29 AM ...
Page 60: ...60 Optimizing for Greater Performance book book Page 60 Tuesday November 27 2007 10 29 AM ...
Page 218: ...218 Glossary book book Page 218 Tuesday November 27 2007 10 29 AM ...
Page 226: ...226 Index book book Page 226 Tuesday November 27 2007 10 29 AM ...