Nvidia GTX980Ti driver problem

Hi
I have a asus GTX980ti driver. I’ve installed jessie 8.5 and installed driver by solution in debian wiki https://wiki.debian.org/NvidiaGraphicsDrivers but the driver is not yet installed and when I run nvidia-detect is says that the driver is not installed. in Asus site https://www.asus.com/us/Graphics-Cards/MATRIX-GTX980TI-P-6GD5-GAMING/HelpDesk_Download/ also there is no option to download linux driver. how can I solve it?

thanks in advance.