Install Windows 10 on MacBook Pro early 2011 with faulty AMD video card

I have a MacBook Pro early 2011 which suffers the well known problem with the AMD discrete graphic card. There were artifacts on the screen, therefore I decided to disable it by entering some commands I found on the internet (I don't remember exactly which procedure I followed, I think I used a live Ubuntu distro or entered some console commands before start upping the system: I entered something like "kext" and so on...). Now the Mac works well in MacOS with only the integrated Intel graphic card and I am pretty satisfied by it. I would like now to dual boot the system installing Windows 10 in a second partition using the hybrid GPT/MBR approach, as well described in the following question: https://apple.stackexchange.com/questions/308743/how-to-install-windows-10-into-a-2011-imac-without-using-the-boot-camp-assistant Unfortunately, I get stuck at point 10). When booting for the first time after having modified the partition with disport, I would be supposed to begin installing Windows 10, but all I get is a black screen. I suspect this is done because of my faulty graphic card. Could that be that Windows is trying to use the discrete AMD card instead of the integrated Intel? How can I guess what's going when the black screen is displayed? Is there some log I can access through another OS and debug?