I'm running Win7 x64, and (at least with my sound card, I guess) need to have both 'Exclusive Mode' options off for my mic to work in-gameOr maybe this might work...
Go to "Recording Devices", right click your Speaker thing in your tray at the right of your task bar. Click Recording Devices. Double click the microphone you use. Go to Advanced. Make sure both options in exclusive mode are checked.
.I'm running Win7 x64, and (at least with my sound card, I guess) need to have both 'Exclusive Mode' options off for my mic to work in-game.