The newer ones are still linked in a way, as everything the system does with the NVIDIA GPU, must go through the Intel GPU as a buffer, then go to the Display. From the Show compatible hardware option, choose Microsoft Basic Display Adapter and click on Next to proceed to fix the Windows 10 brightness control not. The fact that they are separate now, you can install each as needed and not have to be stuck with a certain version. The Intel HD and NVIDIA GPUs are completely separate and this is a good thing because unlike before (such as GT/GTX 300M series) they are allowed to use separate Drivers (with 300M they were only an OEM bundled Intel+NVIDIA driver package). The newer laptops with these GPU combos are different (as of GT/GTX 500M series) and no longer work as one with regards to Drivers. NVIDIA Optimus Technology is something older 'Intel HD + NVIDIA GPU' laptops had where these two GPUs acted like one but auto-switched based on needs/loads. It's required to be there until a new driver is installed. The NVidia processor was used to render games, and was listed in dxdiag under the Render tab. Answer: Microsoft requires a display driver for it to display anything to your display. After installing the Intel card, the Microsoft Render device disappeared from both dxdiag and Device Manager, replaced in both cases by the Intel Card. In my case, the problem was resolved after installing Intel HD Graphics 4600, and then the NVidia driver. Optimus only works if you have the necessary drivers for both cards installed. Newer laptops use Nvidia's Optimus Technology to switch between the high performance Nvidia processor and the slower but more power efficient Intel integrated graphics. Terribly sorry to resurrect this thread, but I recently ran into this problem and seem to have found a solution, for anyone else having this issue.

Microsoft basic display adapter fix