u could go to contol panel , sounds,speech and audio devices.click ajust the system volume , click on advance. Bascally i'm saying that your microphone is muted.
I've got windows xp , don't mind if this doesn't work on vista
-This may be the problem.
Click audio controls on the taskbar, go to advanced under Master Volume. Make sure that center speaker and subwoofer isn't connected to microphone. Just uncheck both, unless that option is required.. worked for me.
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