Not sure if this is the same issue. But just have a look.
http://support.microsoft.com/default...b;en-us;316965
Mine shows 319MHz in the Systems panel (PM 2.0GHz and a 2GB Ram)
Max speed at 798Mhz.
The Soundy Card Worked Perfactly On My Friends Notebook,
But When I Try It On My Z70va It Keeps Connecting To The
Front Speakers On The Notebook Instead Of The Speakers Pluged
Into The Sound Card. Can Anyone Help Me Make This Work?