When my nvidia install messed up in F12 I had to remove all instances of akmod-nvidia, kmod-nvidia-PAE, xorg-x11-drv-nvidia, /etc/modprobe.d/blacklist-nouveau.conf, /etc/X11/xorg.conf* (including livna backup) and after a reboot, change the xorg.conf entry from vesa to nouveau to get nouveau back. When you get nouveau back and running you can try installing the drivers again. I would NEVER use Easylife or Autoten to install graphics drivers, since they don't look to see what kernel your using etc. You should always use Leighs instructions found on the fedora forums here:
http://forums.fedoraforum.org/showthread.php?t=204752
The first on this thread always has the most up to date info for installing nvidia drivers.
Also, my install is 32 bit and using a PAE kernel and I tried installing the akmods, I don't know what Easylife tried installing to your box, so, there might be some different files that you have to remove (i.e., kmod-nvidia instead of akmod-nvidia). But this could be a starting point for you.