Hi tessethia-
I'm Kevin B. Windows user like you. I do apologize for the inconvenience, let me help you sort things out.
Is there any applications running on the background that might running that microphne?
Kindly open your taskbar settings.
Go to Notification area.
Choose Select which icons appear on the taskbar.
Turn them off one by one and see if the microphone will remove.
Turn back on your previous icons to show on system tray.
Also, try to restart your computer using cleanboot.
https://support.microsoft.com/en-us/topic/how-t...
Please let me know what will happen. Hope this will help and have a blessed day!
Thanks,
Kevin B.
Independent Advisor