Hi Sean
Are you sure your sound card driver is installed correctly, (Check in device manager) as if not then the Mixer will not be available.
Have you installed any new sound software, as it is possible that this has disabled the Windows Mixer in favour of its own?
Hope this helps

Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).