Black Screen Issue

[philitup321]

Hello. I have completed the Hackintosh installation, including Multibeast. I rebooted after multiverse, and it worked out fine. But when I had to reboot it again, it tries to run Mountain Lion, but goes to a black screen. Please help.

 

[JonathanB84]

it happend to me as well when I first installed ML 10.8.2.
In my case the the OS boots up and goes to black screen and into sleep.

When I pressed the power button I woke the computer but the screen remained black.

What I did was connecting my machine with HDMI cable to my TV and then I was able to see everything.
After further investigation I found that the issue was with my DSDT file.

I can't say exactly what went wrong in the file because I have tried so many variations, but I can surely say that it was there.
Once I replaced my DSDT file the screen never went black again.

Hope this will take you one step closer to solving it on your machine.