Dell LATITUDE D400 - Manual (Page 21)

2. Double-click the System icon.
3. Click the Hardware tab.
4. Click Device Manager.
5. Double-click DVD/CD-ROM drives.
6. Double-click the name of the drive.
7. On the drive Properties screen, click the Properties tab.
8. Click the box near the bottom of the screen to enable digital audio for your CD or DVD drive.
If you have a problem with external speakers
NOTE: The volume control in some MP3 players overrides the Windows volume setting. If you have been listening to
MP3 songs, make sure that you did not turn the player volume down or off.
Check the speaker cable connections — See the setup diagram supplied with the speakers.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device, such
as a lamp.
Ensure that the speakers are turned on — See the setup diagram supplied with the 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.
Test the speakers — Plug the speaker audio cable into the connector on the computer. Ensure that the
headphone volume control is turned up. Play a music CD.
Run the speaker self-test — Some speaker systems have a self-test button on the subwoofer. See the
speaker documentation for self-test instructions.
Eliminate possible interference — Turn off nearby fans, fluorescent lights, or halogen lamps to check for
interference.
Reinstall the sound (audio) driver — See " Reinstalling Drivers and Utilities ."
Run the Misc. PCI Devices diagnostic test — See " Using the Dell Diagnostics ." If the tests complete
successfully, the controller is functioning properly.
If the problem persists, or if the tests do not complete successfully, contact Dell .
For Windows 2000 only, ensure that digital audio for the CD drive is enabled —
1. Click the Start button, point to Settings, and then click Control Panel.
2. Double-click the System icon.
3. Click the Hardware tab.
4. Click Device Manager.
5. Double-click DVD/CD-ROM drives.
6. Double-click the name of the drive.
7. On the drive Properties screen, click the Properties tab.
8. Click the box near the bottom of the screen to enable digital audio for your CD or DVD drive.
Printer Problems
Fill out the Diagnostics Checklist as you perform the various checks.