AntonyKoutsos :
Alan Caldwell :
Do you have an integrated GPU? That's why.
Let me explain. Right now i have the AMD drivers with the HD 5770 GPU. I am going to uninstall the drives with the DDU, then shut down my PC and change the card to a GTX 970. Then i will install the new nvidia drivers. I am a bit confused on what exactly you are asking.
Try this, it will work.
First of all you need to TOTALLY remove all the old drivers. Use this link.
http://www.wagnardmobile.com/DDU/
Note:
Select the respective company(i.e Nvidia or ATI) drivers to be uninstalled.
Use clean and shutdown option.
And then install the new GTX 970
Install the new drivers after booting.
I have changed the steps to make it clearer.