Your post is light on PC details. Maybe there's a failed port or other issue but what is that USB mic for? Why not use that?
I have problem with my microphone panels....
When i put microphone in them it doesn't work...
My computer can register them, but it looks like computer doesn't get signal...
When i go to recording devices ( http://prntscr.com/a4444d )
the green bar is constantly green whatever i talk and i can't hear anything...
I try with updating my drivers and all that kind of stuff... but it doesn't work...
i don't know why!
Please help!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic