[SOLVED] Can't use Nvidia to run games

[ZeraX]

Hi all

I've been facing a problem in my Qosmio X875 for a while.
the laptop come with 2 integrated GPUs, one is Intel HD 4000 and Nvidia Geforce 670 GTX

however, i can only use the Intel one, when i use Nvidia and launch a game i immedietly get "Failed to enumerate video outputs" either on DirectX9 or 11 renders.
i get 18~23 FPS while i should get more than that even with lower settings.
i can post caps if necessary.

My question is, is there any way to use Nvidia card or is it being worked on for future update ?

thank you in advance.

Spec:
Windows 8.1 Update 1 Pro x64
12GB Ram
Intel Core i7 3630QM @2.40Ghz
Nvidia Geforce 670 GTX 3Gb VRAM
Dolphin 4.0.2 64-Bit