USB Microphone Stopped Working

Using W7U RTM with USB plantronic game com1 headset, realtek 2.37 drivers, properly configured.

USB plantronic gameCom1 microphone was properly configured and worked with BF2, Skype. Recently the microphone stopped working, Sound still works.

Headset and microphone work with other computers. BIOS is correct, have uninstalled sound drivers, reinstalled sound drivers.

Plantronics tech support states this is s W7 issue.

Any help would be appreciated

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