Internal Speaker Failure - Acer Aspire E1-421 Service Manual

Internal Speaker Failure

If internal Speakers fail, perform the following:
Figure 4-6. Internal Speaker Failure
Sound Problems
Perform the following, one at a time.
1. Boot the computer.
Start Control Panel System and Maintenance System Device
2. Navigate to
Manager
. Check the Device Manager to determine that:
The device is properly installed

There are no red Xs or yellow exclamation marks

There are no device conflicts

No hardware is listed under Other Devices

3. If updated recently, roll back the audio driver to the previous version.
4. Remove and reinstall the audio driver.
5. Make sure that all volume controls are set mid range:
Click the volume icon on the taskbar

Drag the slider to 50. Confirm that the volume is not muted.

Click Mixer to verify that other audio applications are set to 50 and not muted.

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