MicSwitch lets you mute or unmute Microphone with a shortcut in Windows 11/10. You need to set the predefined hotkeys & you are good to go.

You can test a microphone on a Windows 10 computer to ensure it's plugged in correctly and working. To test your microphone, you'll need to open Windows' Sound Settings menu.

It's easy to turn on your microphone on a Google Hangout by giving the platform permission and simply pressing the unmute button during a call.