Hi,
If the Q&A Assist procedure doesn't work, try the steps below:
See if that resolves the issue. If not, go to the Start menu > Settings > System > Sound, scroll down to "More sound settings," and—on the Recording tab—right-click in the blank area and select "Show disconnected devices" and "Show disabled devices."
Check for any disabled devices and enable them.
If there aren't any, go to Device Manager, navigate to the "Sound, video and game controllers" section, take a screenshot, and post it here.
Thanks.