Hi, I'm Bernard. I'm happy to help!
Just to confirm, did it work fine before? Have you tried using the recorder app and checking if the microphone is working?
While waiting, and if it's working fine before, kindly follow the steps below:
Method 1. Run Audio troubleshooter:
Press the Windows Key + R, then type in:
msdt.exe /id AudioPlaybackDiagnostic
Then hit OK and follow the prompt to run Audio Troubleshooter.
Method 2. Roll back the Microphone driver:
-Press the Windows key + X
-Go to Device Manager
-Expand the Audio inputs and Outputs
-Look for your Microphone
-Right-click and click Update Driver
-Select Browse my computer for drivers
-Click Let me pick from a list of available drivers on my computer
-Choose an old driver or another driver name, then select it and hit next until it installs.
-Restart the PC and check.
Method 3. Roll back Audio driver:
-Press the Windows key + X
-Go to Device Manager
-Expand the Sound, video and game controller
-Look for Realtek (R) Audio or High Definition audio
-Right-click and click Update Driver
-Select Browse my computer for drivers
-Click Let me pick from a list of available drivers on my computer
-Choose an old driver or another driver name, then select it and hit next until it installs.
-Restart the PC and check.
Note: If the issue persists, please download and install a Microphone and Audio driver from your manufacturer's website.
Note: This is a public forum. I may respond shortly, but I apologize in advance for any delays. I am simply a fellow user trying to provide helpful insights and information.