Dell Latitude D520 - Manual (Page 97)

Reinstall the scanner driver — See the scanner documentation for instructions.
Sound and Speaker Problems
Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks.
No sound from integrated speakers
Adjust the Windows volume control — 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. Adjust the volume, bass, or treble controls to eliminate distortion.
Reinstall the sound (audio) driver — See Reinstalling Drivers and Utilities.
No sound from external speakers
Ensure that the subwoofer and the speakers are turned on — See the setup diagram supplied with the speakers. If your speakers have volume controls,
adjust the volume, bass, or treble to eliminate distortion.
Adjust the Windows volume control — 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.
Disconnect headphones from the headphone connector — Sound from the speakers is automatically disabled when headphones are connected to the
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 — Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference.
Reinstall the audio driver — See Reinstalling Drivers and Utilities.
Run the Dell Diagnostics — See Dell Diagnostics .
No sound from headphones
Check the headphone cable connection — Ensure that the headphone cable is securely inserted into the headphone connector.
Adjust the Windows volume control — 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
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
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.