Black Screen Upon Boot

[Nathan Tahbaz]

Hi all,
This is my second hackintosh build. I followed stork's thunderbolt build almost exactly, with the exception of substituting in a Gigabyte Geforce GTX 650. The ML install went well, then I tried to reboot. The usual apple logo appears, with the spiny loading circle underneath, then the screen goes black. I've tried booting up in safe mode, and with the GraphicsEnablerNo command, to no avail. The display is a 27in Samsung SyncMaster S27B550 connected into the HDMI port of the graphic card. I would appreciate any and all suggestions/solutions to the issue.
Build Hardware Specs;
Intel Core i5-3570K Ivy Bridge 3.4GHz (3.8GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor
GIGABYTE GA-Z77X-UP5 TH LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard with Dual Thunderbolt
GIGABYTE GV-N650OC-1GI GeForce GTX 650 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Video Card

 

[Middleman]

Hi Nathan,

Try my guide here using the exact same settings and commands. It will get your setup fully working > http://www.tonymacx86.com/mountain-...-safe-mode-same-initial-start.html#post542495

 

[Nathan Tahbaz]

I changed the recommended setting in the BIOS, but when I boot withe the command -x -v, I get the verbose mode scrolling text, then a black screen.