Hi,
You need to delete the YAST drivers before you can complete the compiling of the NVIDIA drivers the hard way.
Restart your computer then when you get to GRUB choose the first openSUSE option and type 3
This will drop you to run level 3 to start off.
Then when it prompts you to log in, log in as root then enter your root password.
Then type:
and it will bring up Yast.
Press tab then use the down arrow key to get to software management then press enter.
It might complain about not being able to refresh repositories so just tell it to skip refreshing the repositories.
Once you're in search for Nvidia. Then delete anything Nvidia related by highlighting an entry and pressing enter so that there's no marking next to it.
Once done with that, then hit tab until you've highlighted "accept" and then hit enter. It will bring you back to yast when it's done.
Hit tab till "quit" is highlighted and then hit enter. You're now back into run level 3.
You can now proceed to install the Nvidia drivers "the hard way"
Take Care,
Ian