[KarmaKiller]

You need to install your nvidia drivers for the card.
Follow these steps:

The Process:

1. Open a terminal and type sudo apt-get update
2. Type sudo apt-get install nvidia-glx
3. Type sudo apt-get upgrade
4. Type sudo dpkg-reconfigure xserver-xorg
   • Select the nvidia driver from the X server driver list and follow the on-screen steps to complete the configuration
5. Once finished with the configuration, hold down Ctrl+Alt+Backspace to restart X server. You should be presented with a nice NVIDIA splash screen signaling that the driver is installed and working
6. You can test this in the terminal by typing glxinfo | grep direct (the output should be direct rendering: yes)
7. You can also type glxgears to watch your card at work