Troubleshooting 153R E I N S T A L L T H E S C A N N E R D R I V E R — See the scanner documentation forinstructions.Sound and Speaker ProblemsWARNING: Before working inside your computer, read the safety informationthat shipped with your computer. For additional safety best practices information,see the Regulatory Compliance Homepage atwww.dell.com/regulatory_compliance.No sound from speakersNOTE: The volume control in MP3 and other media players may override theWindows volume setting. Always check to ensure the volume on the mediaplayer(s) has not been turned down or off.C H E C K T H E S P E A K E R C A B L E C O N N E C T I O N S — Ensure the speakers are connected asshown on the setup diagram supplied with the speakers. If you purchased a soundcard, ensure that the speakers are connected to the card.E N S U R E T H A T T H E S U B W O O F E R A N D T H E S P E A K E R S A R E T U R N E D O N — See thesetup diagram supplied with the speakers. If your speakers have volume controls,adjust the volume, bass, or treble to eliminate distortion.A D J U S T T H E W I N D O W S V O L U M E C O N T R O L — Click or double-click the speaker iconin the lower-right corner of your screen. Ensure the volume is turned up and that thesound is not muted.D I S C O N N E C T H E A D P H O N E S F R O M T H E H E A D P H O N E C O N N E C T O R — Sound from thespeakers is automatically disabled when headphones are connected to the computer’sheadphone connector.T E S T T H E E L E C T R I C A L O U T L E T — Ensure the electrical outlet is working by testing itwith another device, such as a lamp.E L I M I N A T E P O S S I B L E I N T E R F E R E N C E — Turn off nearby fans, fluorescent lights, orhalogen lamps to check for interference.R U N T H E S P E A K E R D I A G N O S T I C SR E I N S T A L L T H E S O U N D D R I V E R — See the Dell Technology Guide on your computeror at support.dell.com.R U N T H E H A R D W A R E T R O U B L E S H O O T E R — See "Hardware Troubleshooter" onpage 135.No sound from headphonesC H E C K T H E H E A D P H O N E C A B L E C O N N E C T I O N — Ensure the headphone cable is