Ok I finally managed to get into safe mode. I tried 5 or 6 different methods and the only thing that worked was as simple as holding shift when hitting restart on the log in screen(I'm on Windows 8).
Once I was in boot mode, I was able to successfully end all of the Malware Bytes tasks, and after that, I was able to unninstall it with "Revo Unninstaller".
Is there anything else I have to do to fully remove the software from my laptop?
Thank you for your assistance. Your software is very powerful, I'm impressed by its security, but this kind of things can't happen, it's the first software I've seen inadvertedly completely break down a computer. I couldn't even access Chrome and had to restart through the power button everytime after opening 2 programs, because after that it wouldn't work anymore.
Cheers guys