After install Graphic Driver Boot stop

[Chiragdj22]

i have Gigabyte Z97x-UD3H0Bk with 8GB Ram and Gigabyte Geforce 960 G1 GammingSuper OC 4GB
i am trying to install Sierra 10.12
after installing Step 5 Post Installation with MultiBeast

my graphic driver is not detect so i install optional driver
in point 12 Optional Graphic driver install in
https://www.tonymacx86.com/threads/...for-macos-sierra-10-12-1-367-15-10-15.205568/

and Restart my system it freeze i attach a screen shoot and i click on keypad Esc,f12,F10,F9,Delete is not working