Hardware control issues
If you are having trouble with your headset's hardware controls, the following information can help you troubleshoot and resolve issues.
I cannot hear audio.
Try the following solutions:
Download and install the latest version of Windows Live Messenger from http://explore.live.com/messenger.
Get the latest available software updates for your headset from www.microsoft.com/hardware/downloads.
I cannot adjust the microphone volume with the up (+) or down (-) buttons.
The up (+) and down (-) buttons adjust the volume of the headphones only. They do not adjust the microphone volume.
I can still hear audio after I push the Mute button.
The Mute button on the headset control mutes the microphone only. It does not mute the audio of the headphones.
I cannot find the Mute button on my wireless headset.
The wireless headset does not have a Mute button.