Normally when we update the Kernel or big updates from our distro, the kernel is also updated.
This causes the graphics module is not included in the new kernel.
Because the new kernel is not configured to work with NVIDIA drivers installed,
causes the GUI does not load and will not go past the black screen of the Terminal Classic (tty1).
The easiest way to fix this is to boot the kernel in question (default always does the most recent)
and once we are in Terminal mode (because the environment will not start), run the following command:
sudo apt-get --reinstall install nvidia-kernel-dkms
Then finally this one, which will create our new file xorg.conf :
Restart the computer and it should boot the system perfectly.
More information: Here