System board problems, Video and monitor problems, No sound from headphones – Dell OptiPlex 170L User Manual
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No sound from headphones
System Board Problems
Fill out the
Diagnostics Checklist
as you complete the following checks.
Video and Monitor Problems
Fill out the
Diagnostics Checklist
as you complete these checks.
l
If the tests complete successfully, the controller is functioning properly.
l
If the problem persists, or if the tests do not complete successfully,
contact Dell
.
Check for interrupt request conflicts —
See "
Resolving Software and Hardware Incompatibilities
."
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.
CAUTION:
Before you begin this procedure, follow the safety instructions in the Product Information Guide.
Check the power supply cable connections —
1.
Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then remove the
computer cover.
2.
Ensure that the power cables from the power supply are firmly connected to the connectors on the system board.
3.
Replace the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
"
CAUTION:
Before you begin this procedure, follow the safety instructions in the Product Information Guide.
Reinstall the battery
1.
Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then remove the
computer cover.
2.
Remove the battery, wait 5 minutes, and then reinstall the battery.
3.
Replace the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
If the problem still exists,
contact Dell
.
CAUTION:
Before you begin this procedure, follow the safety instructions in the Product Information Guide.
Replace the Memory Modules —
1.
Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then remove the
computer cover.
2.
Replace the memory module(s).
3.
Replace the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
4.
If the RAM count displayed does not correctly match the actual amount of memory installed in the computer,
contact Dell
.