No Sound From Speakers; No Sound From Headphones - Dell Precision Workstation 370 User's & Service Manual

Fill out the Diagnostics Checklist
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in
the Product Information Guide.

No sound from speakers

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.
Check the speaker cable connections —
diagram supplied with the speakers. If you purchased an audio card, ensure that the speakers are connected to
the card.
Ensure that the subwoofer and the speakers are turned on —
speakers. If your speakers have volume controls, adjust the volume, bass, or treble to eliminate distortion.
Adjust the Windows volume control —
your screen. Ensure that the volume is turned up and that the sound is not muted.
Disconnect headphones from the headphone connector —
disabled when headphones are connected to the computer's front-panel headphone connector.
Test the electrical outlet —
such as a lamp.
Enable digital mode —
Windows XP
1. Click the Start button, click Control Panel, and then click Sounds, Speech, and Audio Devices.
2. Click Sounds and Audio Devices.
3. Click the Hardware tab.
4. Double-click the name of your CD drive.
5. Click the Properties tab
6. Check the Enable digital CD audio for this CD-ROM device box.
Windows 2000
1. Click the Start button, point to Settings→ Control Panel, and then click Sounds and Multimedia.
2. Click the Hardware tab.
3. Click the name of your CD drive and click Properties.
4. Click the Properties tab.
5. Check the Enable digital CD audio for this CD-ROM device box.
Eliminate possible interference —
interference.
Run the speaker diagnostics
Reinstall the audio driver —
See Reinstalling Drivers and
Check the device option setting —
Devices option is set to On. Exit system setup and restart your computer.
Run the Dell Diagnostics
Check for Software and Hardware Conflicts

No sound from headphones

Check the headphone cable connection —
headphone connector. See
as you complete these checks.
Ensure that the speakers are connected as shown on the setup
Click or double-click the speaker icon in the lower-right corner of
Ensure that the electrical outlet is working by testing it with another device,
Your speakers do not work if the CD drive is operating in analog mode.
Turn off nearby fans, fluorescent lights, or halogen lamps to check for
Utilities.
Enter system setup
Ensure that the headphone cable is securely inserted into the
"Your Desktop Computer" or
See the setup diagram supplied with the
Sound from the speakers is automatically
and ensure that Sound under the Integrated
"Your Mini-Tower Computer."