Need help with Toshiba Satellite C850 - A825 #iATKOS #ML2

Hi. I need help installing Mountain Lion in a Toshiba laptop.



The CPU is an i5 3210 and the GPU is an ATI 7610M.



I tried the guide provided in Insanelymac and I'm stuck at the Apple logo with no entry logo. I then used myHack to create the installer. I both tried -x and -v, then I'm stuck with 'Waiting for root input.'



My installer is the GM release of Mt. Lion. Do I need the 10.8.3 Mt. Lion?





source