I've gone into safe mode and uninstalled any video card drivers, and it boots up fine into windows normally. Then I install both drivers for the ati HIS 9250 (PCI) and then the 7600 GS PCI-E. Reboot. When it gets past the windows loading screen, it just comes to a blank screen, and it doesn't go any further. Pressing keys does nothing. Has anyone experienced this? Am I SOL with trying to do this in vista? I'm building this for my Dad and this is his request as he wants quad screens (does a lot of spreadsheet/video/image editing) .