Hey Everyone! I am having a bit of trouble since my ATI Radeon x1900 512mb video card was replaced in my Mac Pro 1,1 with a Nvidia GeForce 8800GT 512mb by Apple since the x1900 issues finally surfaced. My 8800GT has been working great except for the fact I can't get it to boot into anything that has to do with Windows.... I had a Windows 7 install on my spare HD in my Mac Pro that was running beautifully until i installed the 8800GT. I tried booting into Windows via Boot Camp partition and it showed nothing but a black screen. So i tried to boot into the Windows disc.... black screen.... I even erased the entire Boot Camp partition and created a new one and tried to re-install windows but still nothing but a black screen... It won't even enter or start installation.... Anyone have any ideas on what might be going on?