Here is a guide to install the latest Nvidia drivers. You can install the drivers by adding the “Ubuntu-X” team PPA for X Updates to your system.
To add the PPA and install the driver open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:
sudo add-apt-repository ppa:ubuntu-x-swat/x-updates -y
sudo apt-get update && sudo apt-get install nvidia-current nvidia-settings -y
When installed close your terminal window and reboot your system.
To check if the driver is installed open a terminal window and copy+paste the following line:
sudo /sbin/lsmod | grep nvidia