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160 Solving Problems
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No. Go to step 5.
5 Run the VESA/VGA Interface tests in the Dell Diagnostics.
Did any of the tests fail?
Yes. The video controller on the system board may be defective.
Contact Dell for technical assistance.
No. Go to step 6.
6 Turn off the computer and the monitor, connect another monitor to
the computer, and then turn them on.
If you do not have another monitor, contact Dell for technical
assistance.
7 Allow one minute for the computer to initialize its components, and
then adjust the monitor's brightness and contrast controls.
Is the monitor readable?
Yes. The original monitor is defective. The problem is resolved.
No. Contact Dell for technical assistance.
Sound and Speaker Problems
Basic Checks:
• If using external speakers:
– Make sure that the speaker cables are firmly connected to the
computer.
– Test the electrical outlet: verify that the speakers are connected to
a working electrical outlet.
– Ensure that the speakers are turned on.
• If using a sound card, make sure external audio devices are connected
to the sound card’s connectors and not to the microphone, line-out, or
line-in connectors on the computer's front or back panels.
• Adjust the volume.
• Reinstall the audio driver for your operating system.
• Check for interference: electrical appliances on the same circuit or
operating in close proximity to the computer can cause interference.