ASUS M4A785TD-M Evo: unknown device

[XEyedBear]

I have set up a system with the subject motherboard and NO additional cards or other devices (aside from fixed disks and a monitor of course). I use Win/XP SP3. I have installed all the drivers available on the support DVD which came with the motherboard. I have updated them all to the latest level available on the ASUS support siite. I have updated the BIOS to the latest level. I have taken the latest Chipset and graphics drivers from the AMD web-site. No matter what I do, Win/XP still reports detecting an unknowm device UNTIL I set the AMD 785 HDMI Audio function in BIOS to DISABLED. Why don't the drivers recognise this device? Does it mean that HDMI audio is not available on this motherboard?

[punk_zappa]

Why not install the HDMI driver from AMD? Drivers & Support | GAME.AMD.COM

[martin_metal_88]

Most of the time when you have a PCI-E HDMI card XP can't recognize it and tell unknow device but it will work. Probably it can't do it even with onboard HDMI.

[MarkOne]

Don't play with AMD board, I may in the ditch ... but you have the same undetected HDMI when the driver of the ATI vga card are not yet install. ( those ATI with HDMI ) May be worth to search on this side since the the onboard GPU is ATI too , do you try to install the GPU driver directly from ATI ?