Dell XPS 420 (Late 2007) - Manual (Page 72)

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Troubleshooting
V ERIFY THAT THE SCANNER IS RECOGNIZED BY M ICROSOFT W INDOWS —
1 Click Start → Control Panel→ Hardware and Sound→ Scanners and Cameras.
2 If the scanner is listed, Windows recognizes the scanner.
R EINSTALL THE SCANNER DRIVER — See the scanner documentation for
instructions.
Sound and Speaker Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
No sound from speakers
NOTE:
The volume control in MP3 and other media players may override the
Windows volume setting. Always check to ensure that the volume on the media
player(s) has not been turned down or off.
C HECK THE SPEAKER CABLE CONNECTIONS — Ensure that the speakers are
connected as shown on the setup diagram supplied with the speakers. If you purchased
a sound card, ensure that the speakers are connected to the card.
E NSURE THAT THE SUBWOOFER AND THE SPEAKERS ARE TURNED ON — See the
setup diagram supplied with the speakers. If your speakers have volume controls,
adjust the volume, bass, or treble to eliminate distortion.
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.
D ISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR — Sound from the
speakers is automatically disabled when headphones are connected to the computer’s
front-panel headphone connector.
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
E LIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, or
halogen lamps to check for interference.
R UN THE SPEAKER DIAGNOSTICS
R EINSTALL THE SOUND DRIVER — See "Drivers" on page 90.
R UN THE H ARDWARE T ROUBLESHOOTER — See "Troubleshooting Software and
Hardware Problems in the Microsoft Windows Vista™ Operating System" on page 93.
book.book Page 72 Tuesday, November 27, 2007 10:29 AM