Can't get Realtek drivers to install on EVGA 790i Ultra MB

Just finished building a new computer.

EVGA 790i Ultra MB, 4 gig Corsair DDR3-1333 mem, two BFG 8800GTX OC video cards in SLI, Thermaltake Toughpower 700watt PS, WD Raptor 150 gig SATA 10,000 rpm HD partitioned in half with Win XP Pro on one partition and Vista Ultimate on the other, 24 inch Hyundai wide screen LCD. Got a couple of Samsung DVD drives and three other hard drives left over from older computers.

On the Vista side..., everythings fine.

On the XP partition, I cannot get the on board audio to work. I run the EVGA install disk, and it installs most of the drivers OK, but the on board HD audio..., nothing. A couple of unknown PCI devices show up in Device Manager, but with no drivers. No matter what I do, I cannot get it to produce sound. Windows Media Player says it cannot find audio drivers. My TV tuner card will not work becasue it says it cannot find the audio drivers.

The same video card and audio system work fine in Vista...., but nothing in XP.

I've got XP Pro with SP 2 and 3 installed.

I also cannot get the free McAfee software to install. It downloads and then gives an error message as soon as the install starts. I spent an hour on the phone with Comcast and McAfee yesterday to no avail.

Anyone have any ideas? I'm getting quite frustrated!

Thanks for any help!

Hey Comrade!

The unknown PCI devices issue can be solved by going to the Jmicron website ftp://driver.jmicron.com.tw/jmb36x/Win2k_xp_Vista/
and downloading JMB36X_WinDrv_WHQL_R1.17.37WHQL.zip. Then install the driver when you get the unknown PCI device prompt.

Have a good night.

By the way, SP3 had nothing to do with the audio problem.

Cheers!!