The microphone on my Logitech Webcam isn't working. I had a headset before I had the webcam and wasn't aware until now that I had audio on my webcam. I finally removed my headset but now no one can hear me. I checked the level of the sound. I have a XP200 BenQ. Can someone please tell me why it isn't working. I seem to be getting a message that the connection is unknown and I don't understand. Please help.