Hi guys! My pc (ASRock Gm31 GS, Intel Core 2 Duo 2,39 GHZ, Nvidia GeForce 9400GT, 4GB 666MHz Ram DDR2) runs Os X 10.7.2 with an Audio device. I tried to install Yosemite Zone and Mavericks Zone, but in both cases when i arrive to the boot screen and select to boot the usb with those os, the pc restarts. I used -v, -x, GraphicEnabler=Yes and No, ncpm=0x2000, /haswell but everytime nothing happens. Can you help me?