To uninstall your audio driver
- In the search box on the taskbar, type device manager, then select it from the results.
- Select the arrow next to Sound, video and game controllers to expand it.
- Right-click the listing for your sound card or audio device, select Uninstall device, select the Delete the driver software for this device check box, and then select Uninstall.
- Restart your PC.
- Note: Be sure to save documents and any other current work before you restart.
- This restart will automatically prompt your PC to reinstall your audio driver.
- To restart, select Start > Power > Restart .