I finally managed to get Kali Linux 2.0 mounted with the dd command onto my usb and booted from my MacBook Pro. I got Kali up and running (apart from the wireless, but thats another thread.) Now, I am booting from usb and all I get is a black screen. Kali randomly decides to show on my screen and other times, the black screen. Nothing has been changed. What could be the cause of this?