Can't boot into Yosemite or Mavericks install media (instant reboot)

[revoolch]

Hello,
Some time ago, I decided to build a Hackintosh. I made the install media for Yosemite and Mavericks through Linux using this guide. But when I try to boot, I get the Apple logo and then it just reboots, and verbose mode just shows scrolling text and blackens out. I also tried the -x flag and GraphicsEnabler=no, to no avail.

 

My signature contains the computer's specs. It's a laptop.

 

@joatoche