i recently installed the latest omega drivers for my 9800 pro, everything was working fine until it told me to reboot. When i did this (to complete instilation) everything loaded up as usual until it got to the windows login screen. All i could see was my mouse and everything else was blank, i used the keyboard to login but the screen was still blank (i could hear the windows login sound)

. Ive tried rebooting the computer and attempted to change the display settings with the keyboard and a blank screen

but nothing worked. I am currently using my sister's PC, can anyone help?
any help appreciated