Sound And Speaker Problems; Touch Pad Or Mouse Problems; No Sound From Integrated Speakers; No Sound From External Speakers - Dell Latitude D420 User Manual

Reinstall the scanner driver — See the scanner documentation for instructions.
Sound and Speaker Problems
Fill out the Diagnostics Checklist (see
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

No sound from integrated speakers

Adjust the Windows volume control —
the sound is not muted. Adjust the volume, bass, or treble controls to eliminate distortion.
Reinstall the sound (audio) driver —

No sound from external speakers

Ensure that the subwoofer and the speakers are turned on —
adjust the volume, bass, or treble to eliminate distortion.
Adjust the Windows volume control —
that the sound is not muted.
Disconnect headphones from the headphone connector —
computer's front-panel headphone connector.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Eliminate possible interference —
Reinstall the audio driver — See
Run the Dell Diagnostics — See Dell
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

Check the headphone cable connection —
Adjust the Windows volume control —
that the sound is not muted.
Touch Pad or Mouse Problems
Check the touch pad settings —
1. Click Start® Control Panel® Printers and Other Hardware® Mouse.
Diagnostics Checklist) as you complete these checks.
Double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and that
See Reinstalling Drivers and Utilities.
See the setup diagram supplied with the speakers. If your speakers have volume controls,
Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and
Sound from the speakers is automatically disabled when headphones are connected to the
Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.
Reinstalling Drivers and Utilities.
Diagnostics.
Ensure that the headphone cable is securely inserted into the headphone connector.
Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and