I am having a problem after the last update, the booting to command line problem

I even can't start in the graphic fail system "xfail":

X: cannot stat /etc/X11/X (no such file or directory), aborting

I found some one mentioning a solution which is installing ubuntu-dektop though apt-get but it failed due to this error:

Unmet dependencies " the dependencies are xserver-xorg-video-all and xserver-xorg-input"

Tried to install these first also another dependencies problem.

Solutions I tried:

• removing and installing nvidia driver
• removing and installing xserver
• Tried different versions of nvidia including the latest one which is the one I had before the update

Any ideas?