72 Troubleshooting
VERIFY THAT THE SCANNER IS RECOGNIZED BY MICROSOFT WINDOWS —
1
Click 
Start
 
→ 
Control Panel
→ 
Hardware and Sound
→ 
Scanners and Cameras
.
2
If the scanner is listed, Windows recognizes the scanner.
REINSTALL 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 WINDOWS 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
REINSTALL THE SOUND DRIVER — See "Drivers" on page 90.
R
UN THE HARDWARE TROUBLESHOOTER — 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