when i was opening the boot CD i faced white screen.

i tried a push power button but nothing is changed.

i tried this way

How to enable the AMD Radeon HD 7970, 7950, 7870, 7850, 7770, or 7750 on your Hackintosh

but did not work

i have asus p8z77 -v plus main board

intel i7 3770

please help me

i am writing to ML 10.8.3 But it has opened with -x