DG965WH motherboard has no Audio device

I saw a similar post for another motherboard, but that thread was not solved:

DH87MC no audio devices

  I have a DG965WH motherboard running Windows XP Pro 32-bit.  In the device manager

I see no audio device, and if I download the driver install for the audio (IDT 92XX) it

says I don't have hardware that matches this driver.  I have upgraded the BIOS from

MQ96510J.86A.0816.2006.0716.2308

to

MQ96510J.86A.1754.2008.1117.0002

I also made sure that the audio was enabled in the BIOS peripherals screen.

What else could be the problem?