Nvidia-Current Low Resolution and No Unity

I recently reinstalled Ubuntu on my Toshiba Qosmio X775-3DV78 (with an Nvidia GeForce GTX 560M 3D graphics card), and everything looked fine when I started it up for the first time, except for some glitchy filters over some icons and text. So, I ran the updater and installed nvidia-current, then rebooted. When I got back to Ubuntu, the desktop was stuck in 1024x768 resolution, and neither the Unity bar, the task bar, nor frames around open windows appeared. I was able to log in and see my desktop wallpaper and cursor, though. Any ideas?

Try removing the driver like this:
sudo apt-get purge nvidia-current
and then install it like this

  1. Open gnome-control-center (i.e. System Settings).
  2. Go to Software Sources.
  3. Go to tab Additional Drivers
  4. Install the version that you want.
    Just for a note if the version that you want is already installed in Additional Drivers, remove it and then install it from there again.

Try reinstalling your window manager as well. To see which one you use do:
cat /etc/X11/default-display-manager
and then remove it:
sudo apt-get purge gdm/lightdm/kdm
and then install it:
sudo apt-get install gdm/lightdm/kdm