The microphone mute button is not working on my T400s running Windows 7 RTM. The speaker mute button works (when I press it the light comes on and sounds goes off).
When I click on the microphone button, the light doesn't come on and the microphones don't mute. Is there a driver I am missing or something? I can't find a driver for the button on Lenovo's site.
Anyone out there have this button working?