Hi, I have a problem I can't seem to resolve - or understand. I have a Mac Pro 2009, flashed to 2010 and running a 3.46Ghz hexcore. Originally, I had a flashed PC4870 in there and all was well, if a little slow. I bought a club 3D 7950 a while ago and was happy, despite the lack of boot screens. I recently decided I wanted to get a boot screen and get rid of the 7xxx in the about this mac page so I thought I'd install Windows 7 to get the flashing done as I'd long ago lost my windows drive. However I have run into an issue. I assumed I could simply reboot via bootcamp assistant and the windows install stuff would appear and I could install but this didn't happen. I got a black screen (no flashing curser in the top left btw) In the end I reinstalled the 4870 and did it that way. With the 4870 I get boot screens and bot OS X and windows work perfectly. So I shut down and reinstalled the 7950. However, I cannot boot into windows with the 7950 installed as I get a black screen. I know it'a booting as I hear the windows chimes and it even makes a disconnect/reconnect when I unplug the DVI cable. I am connected via DVI. The 7950 has DVI, HDMI and 2 miniDP on the back. I don't know if it's related but the GT120 in the mac also shows a black screen, whether on OS X or windows. I tried installing new catalyst drivers (by sticking the 4870 back in) but no change. Any thoughts?