still getting black background and white logo, used eddies efi, enabled debug logging.
I don't know why you're having such difficulties, the last EFI I sent you, I removed the Graphics properties from Device Properties as I suspected that maybe the reason for the Black Screen.
You really should have progressed further by now as you've tried the Dortania Guide plus the ones I asked you to try and none according to you has worked out.
My guess is the black screen problem is down to either the connection port you're using from the system to your monitor, (if you're using HDMI use DPI instead as that is what is widely used and more efficient) or bad BIOS settings.
I think you need to revisit the complete setup as this board is if not the easiest, one of the easiest to run OS X.
PS. You shouldn't need to change anything within the EFI Folder I sent you apart from filling in your personal data which should have got you up and running.