I have had my xbox and Turtle Beach X11 headset for 2 years and they have always worked fine. Yesterday I was playing GTA IV with a friend and we were talking in an Xbox Live party and it was fine. I had to leave for a while so I signed out. When I signed back in and joined the party, I could hear him but he could not hear me. When I spoke, the mic icon next to my name indicated that I was talking but no one could hear me. I went into game lobbies and everyone in game could hear me fine. All of my chat settings are normal and I never changed anything. No one can hear me through voice messages or party chat. Game chat works fine. I need help please. What is wrong?