is the switch back...!!
even we want to install the NVIDIA driver
but what we need to do now is switch back first into the GUI
even NVIDIA is not detected yet ,,, again.
so to do that...what i got
is log as root on CLI
choose the latest option
which is similar with X Configuration...
something like that will make you reConfigure your monitor-related
so turn it back into a small resolution for a working one
800 x 600
and the Hardware should be choose as the Standard one there
OK to confirm...
and then reboot.
Normal again, at least u got the GUI back.
Even the NVIDIA driver may not be installed yet, again.