Lets try another configuration that might help . Ohh and Option "DPMS" "FALSE" is wrong. The correct is Option "DPMS" "false" (lower case).
OK. Lets try below...

First remove the current xorg.conf file and create a new.
Code:
sudo rm /etc/X11/xorg.conf
sudo nvidia-xconfig
Then create a new configuration file inside /xorg.conf.d/ (if the folder does not exist, create it)
Code:
sudo mkdir /etc/X11/xorg.conf.d/
Then
Code:
gksudo gedit /etc/X11/xorg.conf.d/10-monitor.conf
add these lines inside
Code:
Section "Monitor"
    Identifier "LVDS0"
    Option "DPMS" "false"
EndSection

Section "ServerLayout"
    Identifier "ServerLayout0"
    Option "BlankTime"  "0"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "0"
EndSection
and save the file. Important here is to replace LVDS0 , with your actual monitor . E.g VGA1 or whatever it is.. find it with
Code:
xrandr
Save the file and reboot.

Thanks