Troubleshooting 99AD 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 speaker icon in the lower-rightcorner of your screen. Ensure that the volume is turned up and that the sound is not muted.DI 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 the speakers is automaticallydisabled when headphones are connected to the computer’s front-panel headphone connector.TE 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 by testing it with anotherdevice, 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 checkfor 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" on page 102.RU N T H E DE L L DI A G N O S T I C S — See "Dell Diagnostics" on page 81.NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listeningto MP3 songs, ensure that you did not turn the player 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 headphone cable is securely inserted intothe headphone connector (see "audio connectors" on page 20).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 speaker icon in the lower-rightcorner of your screen. Ensure that the volume is turned up 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 —1 Click the Start button, click Control Panel, and then click Printers and Other Hardware.2 Click Mouse.3 Try adjusting the settings.CH E C K T H E M O U S E C A B L E — Shut down the computer. Disconnect the mouse cable, check it for damage,and firmly reconnect the cable.If you are using a mouse extension cable, disconnect it and connect the mouse directly to the computer.TO V E R I F Y T H A T T H E P R O B L E M I S W I T H T H E M O U S E , C H E C K T H E T O U C H P A D —1 Shut down the computer.2 Disconnect the mouse.3 Turn on the computer.4 At the Windows desktop, use the touch pad to move the cursor around, select an icon, and open it.If the touch pad operates correctly, the mouse may be defective.RE I N S T A L L T H E T O U C H P A D D R I V E R — See "Reinstalling Drivers and Utilities" on page 102.
