The other thing you can do is, when your setting up the mic in windows, it will have you speak some words, as you do that, it will adjust the volume on the mic. When it gets to what you think it should be 40-50% finish the program without saying anything. So the mic doesn't go up anymore. After that, your problem should be solved.
The same thing happened to me, so I ran the setup for the mic, and did whatever I could to fool it to set the mic volume at what really worked for me, and not what it thought worked. After that, I was good to go.