I had to pull my GPU in order to be able to even get the apple splash screen. IF I didn't it gave me a driver error then restarted.
I've been working on installing the latest version of Mountain Lion on my computer to no avail. I've been following a few guides from youtube and tonymacx86 but I've run into the issue now of trying to get to the installer. I've got my unibeast/multibeast flashdrive with ML on it ready, plug it into my computer, put SATA Mode to AHCI in the UEFI Bios (can't find any of the other mentioned settings, help? the video wasn't UEFI) and open the Chimera start screen. If I just hit the Unibeast drive I get a flash of the apple screen for about half a second then the computer restarts back to bios and throws me back into Chimera.
If I press the down arrow and type commands, no matter what I do (-x, GraphicsEnabler=No, etc) I still get the same result unless -v is there (command to disable apple splash screen and show actual booting of installer), in which case it will scroll for 90 seconds or so then restart.
It's also worth noting that since starting trying to install this, I've had one of my hard drives start going crazy and two BSODs since pulling and reinstalling my card while playing MW2 on Steam.
I'm uploading a video on this now.