Solution:
Login as root in Text Mode,
Stop the gdm service : /etc/init.d/gdm stop, if it is runing.
Then run the following commands,
X -configure
X -config /roo/xorg.conf.new
If you get the GUI, move the /root/xorg.conf.new to /etc/X11/xorg.conf
mv /root/xorg.conf.new to /etc/X11/xorg.conf
Then Restart the System
