Please download Display Driver Un-installer from the below link.

http://www.majorgeeks.com/files/details/display_driver_uninstaller.html 
Under the option " download locations" click on download major greeks 

Now wait for few seconds and the download will start 

How to use http://www.sevenforums.com/tutorials/367109-display-driver-uninstaller-how-use.html

- Download the application and open it. (Perform the steps in safe mode)
- Select NVIDIA on top and Put a check mark on all the NVIDIA components near the NVIDIA logo.
- Now click on Clean and Restart (Highly Recommended)
- Once the computer restarts and goes to the Windows, please follow the steps below


Download the driver version http://www.nvidia.com/download/driverResults.aspx/119399/en-us 
- Once the installer wizard begin, accept the license agreement.
- Select "Custom (Advanced)" install option and then click Next.
- Put a checkmark in the "Perform clean install" option and then click Next. 
- Follow the on-screen instructions to complete the installation.