Installed kmod-catalyst now screen goes to sleep when fedora loads

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http://forums.fedoraforum.org – Hi I've been trying to play quake live but in full screen I get horrible lag. I looked online and found you can install ati catalyst which I did. Now when I boot I get the fedora 17 logo filling up loading screen and then the monitor goes to sleep. I installed the drivers with yum install kmod-catalyst and checked the driver module matched my kernel. I'm pretty sure its the latest one same as my laptop 3.5.2-1.fc17.x86_64 I'm running Fedora 17 with a HD6850. Anyone know how to make the catalyst drivers work on Fedora 17? Or how I go about uninstalling them and going back to the old dr (HowTos)