Hi i know its an old discussion..but i want to update something about this. I have niresh sierra (Credited to Niresh btw). I had the same problem & reading this thread to solve it. But no solution to be found here. Then, I felt frustrated & deleting all the boot flags originally come with the sierra zone. If not mistaken the boot flags were " -v darkwake=0 dart=0 slide=0 ". Suddenly i can boot into the installation page. NICE. As I am writing this while waiting for the installing to finished. Wew.
My Hackintosh Build:
ASRock H61M-VS R2.0
Intel G2010 2.8GHz (Ivy-Bridge)
6GB DDR3 RAM 1333MHz
Western Digital 250GB
Sapphire ATI Radeon HD5870 1GB DDR5