I have an X-Fi and I have an issue with my microphone. Anytime I open vent or change channels it mutes the microphone.

I have to go to Control panel / Audio Devices / input / and test microphone. After testing, the microphone works perfectly. Make any changes (to vent) and I have to repeat the entire process all over again.

I've updated the drivers, reinstalled, and tweaked with every setting I could think of (that's how i discovered the work around) and I can't fix the issue.