It’s possible to disable your microphone in other ways. If you have a laptop with an integrated microphone, some laptop manufacturers let you disable this microphone in your PC’s BIOS or UEFI settings. This option isn’t available on all laptops, but will likely be near an option that lets you disable your webcam if it exists.
If you’ve previously disabled the built-in microphone through your computer’s BIOS, you’ll need to head back to your BIOS settings and re-enable the microphone device.
It’s also possible to disable the integrated microphone device through your computer’s Device Manager. If you’ve previously done that, you must return to the Device Manager and re-enable it.

Install or Update Audio Drivers
Windows 10 tries to install and update device drivers automatically. It usually works fine, but sometimes it doesn’t.
If you’re having problems with sound, you may want to go to your PC manufacturer’s website and install the latest sound drivers available for your laptop or desktop PC. If you assembled the PC yourself, download the sound drivers from your motherboard manufacturer’s website. Updating the drivers may fix your problem.
If you’re having trouble with a USB microphone, you might also want to try downloading the latest USB controller drivers from your PC manufacturer’s website.
Set Your Default Microphone Device
Your PC may have multiple different microphone inputs. For example, if you have a laptop with a built-in mic and you plug in another microphone, your PC now has at least two separate microphones (mic test).
To select the default microphone that’s used in applications, go to the Sound > Recording window, right-click your preferred microphone, and select “Set as Default.” You can also select “Set as Default Communication Device.”
This lets you set different default microphone inputs for different types of applications—but, if you just plan on using one input device, set it as both your standard default and default communication devices.

If you see your microphone showing audio input here, but you can’t get it to work in a particular application, you may need to open that application’s settings window and choose the appropriate microphone input device. Desktop applications don’t always use the default microphone you select in the Windows sound settings.
For example, in Microsoft’s Skype, click menu > Settings > Audio & Video and choose your preferred microphone device from the “Microphone” menu.
