White screen of death and computer halts with ATI 4870 in Boot Camp
I have just received the ATI Radeon 4870 for my Mac Pro (Early 2008)and have upgraded my Leopard to 10.5.7 and works fine on the Mac side. When I reboot and hold the command key I can see my MAC and my BOOT CAMP 2 options as always before. When I click on boot camp I get a white screen with a black frome around it and there is NO hard disk activity and nothing happens no matter how long I leave the computer alone. Before I had no problem booting into my boot camp loaded with vista 64 bit. I have another partition with parallels and that is fine but not this boot camp partition.
I am using ONLY this card in the system. I removed the NVIDIA card.
ALso I tried putting in my Vista 64bit DvD into the drive and rem=booting and see the option when hold the option key to go into MAC,WINDOWS,DVD.... When I select DvD and computer adjust to work in a windows enviroment again the system halts. SO I believe it has nothing whatsoever to to do with drivers inside Vista. It would have to be something that needs upgrading for bootcamp to allow for this video card to work on Bootcamp?
Again I have the latest updates of the OS.
Any suggestions?
Thanks for all your time!
Mac Pro, Mac OS X (10.5.7)