Prohibitory symbol unibeast boot install MacOS X El Capitan

[GuessWhoIs]

Hello, I followed the tutorial of installing El Capitan with the unibeast, and when I try to boot from the USB I select Mac and when the progress bar shows half load a prohibition symbol appears and no longer follows.i tried with an USB 2.0, boot with verbose mode, safe mode stuck me, and I don't know what is the Problem.

I have the following Pc
Motherboard : Asrock z77 professional
CPU : Intel i5 3570k 3.4ghz
Ram : 16gb
Graphic card : Nvidia GeForce GTX 970

I would greatly appreciate any help. THANKS.

 

[ammulder]

There are general suggestions for the prohibited sign in the big list of solutions.

Otherwise, please boot verbose (space bar from the Clover menu) and post a photo of where it stops.

 

[Asus-Freak]

The bios on that board needs patched although Clover may be able to patch it on the fly using AsusAICPUPM. To get the most help/info do a forum search here for Asrock z77 professional (top right corner under settings).