Method 1: Uninstall the audio driver
a, Go to Device Manager by pressing Win+R together to open the “Run” dialog, enter devmgmt.msc.
b, Look for your audio device from the list,
c, Right click on the audio card, select Properties and then you will see a pop-up windows as below. Navigate to Driver tab, click Uninstall.
d, Restart your PC after finishing the process. It will reinstall the driver again and check if it solves the problem.
If not, try Method 2: Update Driver… 
a, Click on the “Update Driver…” this time, then select “Browse my computer for driver software“.
b, Select “Let me pick from a list of device drivers on my computer“. 
c, Proceed and follow steps below
d, Wait for a few minutes, it should successfully update your driver software.
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