Dell PP22L manual Touch Pad or Mouse Problems, No sound from headphones, 136

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

the speakers is automatically disabled when headphones are connected to the 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 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, or halogen lamps to check for interference.

R E 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 140.

R U N T H E D E L L D I A G N O S T I C S — See "Dell Diagnostics" on page 107.

NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to MP3 songs, ensure that you did not turn the player volume down or off.

No sound from headphones

C 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 that the headphone

cable is securely inserted into the headphone connector (see "audio connectors" on page 28).

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 icon in the lower-right corner of your screen. Ensure that the volume is turned up and that the sound is not muted.

Touch Pad or Mouse Problems

C H E C K T H E T O U C H P A D S E T T I N G S —

Windows XP

1Click Start→Control Panel→Printers and Other Hardware→Mouse.

2Try adjusting the settings.

Windows Vista

1Click Start →Control Panel→Hardware and Sound→Mouse.

2Adjust the settings, as needed.

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Troubleshooting