my output is teamspeaks input...

[Dom11990]

hi i have a really bizarre problem. It has only happened recently and i have had these ehadset for at least a year now and never had a problem with them and teamspeak. What happens is everyone tells me that im feeding back and i cant respond. My light doesnt turn on. On my end it doesnt look like im feeding back but others say that on their screen my light is on. When i play music in windows media player they hear my music but not me talking. Any help on this is greatly appreciated. Thanks
Dom

[Dom11990]

if i go to the voice tab and click "Volume" under voice recording, my microphone button is unchecked. If i recheck it my problem is temporarily fixed. After a few minutes it decided to uncheck itself. How can i fix this? Help would be greatly appreciated.
Dom