OK I built a new computer, has an ATI Radeon 5850 as GPU. I got everything installed using the onboard video card but when I installed the Radeon, I can view to BIOS startup but as soon as it loads Windows 7 it goes blank, it tells me its running in 1920x1080 but its just black. Anyone had this problem and found a way to fix it? Also the onboard video doesn't work when the card is in.
when you boot, go into the bios, and select onboard or video card
are you sure your video card supports 1920 x 1080, and monitor
if you have 2 monitor connections on your video card, try the other
boot in safe mood , uninstall video card in the device manager, reboot
also , if you can boot into safe mode,probably driver problem