Hey guys, my build uses a i7 4770k and AMD 7990. I want to disable the iGPU, but when i go into device management, there are no intel devices under display adapters, I only see the 2 amd radeon hd 7900 series drivers (from the dual GPU 7990). Does this mean it is already only running on the GPU? Do i have to install the iGPU driver then disable it?