Hi,
Check in Device Manager (Right click 'My Computer' icon
and select manage).
Under the Sound, video and game controllers branch do you
see your hardware ?
Are there any yellow exclamation marks in device manager ?
(this means some piece of hardware that does not have the
correct software installed)
PLEASE REINSTALL THE DRIVERS FOR YOUR AUDIO HARDWARE.
(either from CD or download from manufacturer's website)
Regards,
Tim
