Anyone know why my windows 7  has no sound

my bootcamp volume of windows 7 does not have sound.  everything looks like its working

This appears to be a bug in Apple's Cirrus audio support.
Here's the workaround:
Open Control Panel, and select Sound.
On the Playback tab, select Speakers, and then hit the Properties button
On the sheet that appears, select "Enhancements"
Check "Disable all enhancements" and click OK.
Restart Windows
Now you should hear sound again.
Nate.

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