Don't worry about getting the "driver has not passed......" message. Hundreds of such drivers are in use. Microsoft simply hasn't got round to testing them all -- it doesn't mean the driver won't work (unless it's the wrong one for the device, of course). Just choose "Install anyway".
The correct driver direct from Intel for your board is item 5 under "Drivers"
"Audio - ADI* 1985 Driver" on this page:
http://downloadcenter.intel.com/filt...4&submit=Go%21