Can't get 2-way SLI working with different branded GTX970 cards

[neoacron]

As the title says, I'm having difficulty getting my 2-way SLI working with my two 970's. The issue is that my NVIDIA Control Panel thinks I don't have a SLI connector attached to them, or at least that's what it says the issue is. Here is an image of what its saying the issue is, I apologize for giving just a link though I'm failing to get the message boards here to like any of imgur's formating. For reference the first image is the NVIDIA control panel, the 2nd and 3rd are the two different cards specs read by GPU-Z.
http://imgur.com/sWoez2K,Ycdemdk,Lu32JeK?third_party=1#0

I have an Asus MAXIMUS VII HERO ATX LGA1150 Motherboard for reference as well. Thank you for your help, and if you need any additional specs about my computer let me know!

 

[clutchc]

Any luck if you uncheck "dedicate to PhysX" and reboot?
Have you tried uninstalling the driver from safe mode with DDU, rebooting and installing the driver anew? https://forums.geforce.com/default/topic/550192/geforce-drivers/display-driver-uninstaller-ddu-v12-9-3-4-released-06-09-14-/