Installing latest NVidia display driver on Ubuntu (manual)...

1) Install Linux headers and build essential

    $ sudo apt-get install linux-headers-`uname -r` build-essential

2) Go to console mode by pressing Ctrl+Alt+F1

3) Logon

4) Stop X-Server

    $ sudo /etc/init.d/gdm stop

5) Execute the installer

    $ sudo sh NVIDIA-Linux-x86-[version].run

6) Complete the installation process

7) Execute command below

    $ sudo nvidia-xconfig --add-argb-glx-visuals

8) Restart X-Server

    $ sudo /etc/init.d/gdm start