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: How to install Windows 10 into a 2011 iMac without using the Boot Camp Assistant, an optical (DVD) drive or third party tools?
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?