After i changed motherboards in my comp, about a week or so later nothing will be recognized in any 3.5 port, front and back. It shows that there just isn't anything plugged in to begin with. I know that the front panel has power at least because the usb's work. I ended up getting a 3.5 to usb adapter and then it shows up. I have tried uninstalling/reinstalling drivers through device manager, and have checked multiple times to make sure they are up to date. I have amd high definition audio.