Screen went blank after installing Display drivers

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http://forums.fedoraforum.org – Just finished wiping and re-installing F12 From a DVD on an Dell Inspiron 9300 with a NV 6800. The NVidia site driver refused to install. so i used the method documented here "rpm -Uvh http://download1.rpmfusion.org/free/...ble.noarch.rpm http://download1.rpmfusion.org/nonfr...ble.noarch.rpm yum --enablerepo=rp*g install kmod-nvidia xorg-x11-drv-nvidia-libs.i686 xorg-x11-drv-nvidia-libs.x86_64 reboot" as instructed to in the sticky. On rebooting, After the load animation, the screen goes blank/black. If i click around I can hear some beeps from the OS so I assume that things are running but i just can'd see anything. How can i resolve this problem? (HowTos)