If you experience problems with the Vortex card, here are some suggestions:

Refer to the Installation Guide which accompanied your Vortex product.

Try performing an UNINSTAL as described in the Vortex Installation Manual.  
Then try re-installing the driver software.

Questions about Vortex are best answered by contacting the manufacturer of 
this Aureal based product.

Thank You for supporting Aureal's Vortex product.