How to disable onboard graphics on Asus g771jw notebook

[IvanfromBE]

Hello guys

After searching so much on the net and reading 1xx threads i'm looking for someone who can tell me how to disable onboard graphics on my asus g771jw that i just bought. (i7,intel onboard and gtx 960)

I'm playing Counter-strike on my 120hz monitor and I bought a special converter DVI-D to mini displayport.

So the main problem is that the fps is dropping from 300-350 to 150fps and i'm trying to found out why... hopefully somebody could help me.

When i'm trying to disabling it in device manager, my nvidia control panel doesn't open and i'm getting this message:
"NVIDIA Settings are not available. You are not currently using a display attached to an NVIDIA GPU"

I'm only able to open nvidia control panel when my onboard intel graphics are enabled. and what I see there in physx that my monitor is running through intel onboard graphics... as my main notebook display (not via 960gtx)
I also don't have any options in bios to disable my intel onboard graphics

Could anyone give me some advice please?

 

[tvi016]

I guess the mini displayport is hooked up to the mb. Any other display outputs on the pc?

 

[IvanfromBE]

I only have mini display and hdmi outputs.

- here's a screenshot of a few things.

http/imgur.com/y9GEoAu