It is difficult to say because you do not tell us what you do get. Do you get to a desktop with a background wallpaper but no top panel or launcher? Does Ctrl+Alt+T bring up the terminal? And do not forget that none of us are experts on Saucy Salamander. This is just as much an experiment to us as it is to you.
If you get to a background wallpaper, then right click it and select Change Desktop Background. That will load System Settings and from there you can open Additional Drivers and experiment with another video driver in case that is the problem.
Reset unity with
to reset Compiz and
dconf reset -f /org/compiz/
to reset Unity. Do not forget to reboot. And browse through this thread and may I suggest that if you are going to run Saucy Salamander this early that you collect a tool kit of useful commands.