I cannot click on Terminal, or shut down the system graphically.
I found a work around on this link It as simple as restarting the GDM
sudo /etc/init.d/gdm stop sudo /etc/init.d/gdm start
If you wonder where to typed in this, Press CTRL+ALT+F1
sudo /etc/init.d/gdm stop sudo /etc/init.d/gdm start