Acer Aspire 5750Z Acer Aspire 5350, 5750, 5750G, 5750Z Notebook Service Guide - Page 144

Internal Speaker Failure 0 If internal Speakers fail, perform the following: Figure 4-6. Internal Speaker Failure Sound Problems 0 Perform the following: 1. Boot the computer. 2. Navigate to Start Control Panel System and Maintenance System Device 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. 4-10 Troubleshooting