Well, it seems there's no end of these problem with radeon 9700 pro. So, here's another one.
I have following problem with Asus P4S8X and Radeon 9700 Pro. There's no video signal after boot up (new computer, nothing installed) on monitor (I think it's called the post phase). I have updated bios to newest version. I checked that my hardware installation is ok with two other graphic cards (pci Riva tnt and agp Radeon 64ddr) and they worked correctly (this way I can see bios). New Radeon 9700 worked however in other much older computer. So hardware is not broke and installation is correct. I I have no idea what to try next.
A lot of people have had the same problem with 8x boards and couldnt fix it. You could RMA the video card to get the latest revision but takes a long time and doesnt always work. The only way i can guarentee that card will work is to get a differnt motherboard.