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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?

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  • Just out of curiosity, how did you discover that? I picture this funny moment where you muted the microphone and said something 'naughty' and it passed through after all...
    – LiraNuna
    Commented Aug 30, 2009 at 1:36
  • In Windows 7, I thought the microphone always "listens", when you turn mute off, it feedbacks through the speakers. I am curious what you mean by mute, can you take a picture of the button / screenshot of the control as I haven't seen this before.
    – William Hilsum
    Commented Aug 30, 2009 at 2:11
  • just noticed the light wasn't coming on. I all ways double check my mute.
    – spoon16
    Commented Aug 31, 2009 at 17:04

1 Answer 1

Reset to default
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Discovered this after quite some searching. Install (re-install if necessary) the Power Management Driver, at least v1.60 works for me. Reboot, and the microphone mute button should work. This seems to work on most Thinkpads (mine is a W510) on Windows 7.

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