Troubleshooting 135TE S T T H E E L E C T R I C A L O U T L E T — Ensure that the electrical outlet is working bytesting it with another device, such as a lamp.EL 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,or halogen lamps to check for interference.RE I N S T A L L T H E A U D I O D R I V E R — See "Reinstalling Drivers and Utilities" onpage 139.RU N T H E DE L L DI A G N O S T I C S — See "Dell Diagnostics" on page 109.NOTE: The volume control in some MP3 players overrides the Windows volumesetting. If you have been listening to MP3 songs, ensure that you did not turn theplayer volume down or off.No sound from headphonesCH 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 that the headphonecable is securely inserted into the headphone connector (see "audioconnectors" on page 29).AD J U S T T H E WI N D O W S V O L U M E C O N T R O L — Click or double-click the speakericon in the lower-right corner of your screen. Ensure that the volume is turnedup and that the sound is not muted.Touch Pad or Mouse ProblemsCH E C K T H E T O U C H P A D S E T T I N G S —Windows XP1 Click Start→ Control Panel→ Printers and Other Hardware→ Mouse.2 Try adjusting the settings.Windows Vista1 Click Start → Control Panel→ Hardware and Sound→ Mouse.2 Adjust the settings, as needed.CH E C K T H E M O U S E C A B L E — Shut down the computer, disconnect the mousecable and check it for damage, then firmly reconnect the cable.If you are using a mouse extension cable, disconnect it and connect themouse directly to the computer.
