Hi Binuk,
I'm Dyari. Thanks for reaching out. I will be happy to assist you in this regard.
May I know if you are using intern or external Mic?
Kindly go to Control Panel > Sound > Recording tab > Please take a screenshot and post it back.
Right click on Start > Device Manager > Expand Audio inputs and outputs > Take a screenshot and post it back.
Also, access this link and fix microphone problems:
https://support.microsoft.com/en-us/windows/fix...
Please let me know if you need further assistance and keep me updated.
Stay safe