[exxact@localhost ~]# rm -rf /etc/X11/xorg.conf
[exxact@localhost ~]# nvidia-xconfig
##Will state missing files, but at the end says a new file was written
[exxact@localhost ~]# startx
##Check for video on your monitor by switching the mode to whatever output you are using (DVI/HDMI/DP)
the input button on the monitor
##Make sure to remove the VGA cable after making this change; so when CentOS 7 is idle, and the screen sleeps, it does
not revert back to VGA, where it will show the CentOS 7 background with no login prompt