First, check which graphics card you currently have. There are 2 ways to do this:
1) Right-click on your desktop background (wallpaper) and > select NVIDIA-Control Panel. The application will pop up, this can take a while. In the ‘home’ screen is stated which Graphic card you have.
2) The second way is to use the diagnostic tool of Directx. Press Windows button + R and type dxdiag. Select Display 1 and under chiptype, you can find your graphics card.
Go to the Nvidia driver website to download the newest drivers. Fill in your information an hit ‘search’. Next hit ‘download’.
Open the downloaded installation file and follow the steps. After completion, your Graphics card is updated.