This article explains how to install a microphone in Windows (including Bluetooth microphones) and how to test the microphone. The instructions apply to Windows 10 and 11.
How to Set Up and Test a Microphone on Windows 10 [Tutorial]
If you purchased a USB microphone that came with driver software, you will need to install that first and then restart your PC. Otherwise, start by plugging your microphone into the appropriate port on your computer.
Select the Start menu (the Windows icon) on the taskbar and open the Settings app.
Select System from the sidebar, then select Sound.