I'm not one to post onto forums however I've been toiling at this for about 12 hours and I have no solution. Yesterday I installed Manjaro onto a new SSD that had just been taken out of the box. I used a live disk with Manjaro 18 on it and everything went smoothly. I spent the rest of the day customising it and when I went to install some drivers for my display (YouTube was stuttering so I stupidly assumed it was a driver issue) it got stuck at the reboot. So far I've gone into 'Ctrl+Alt+F2' and I'm in the process of reinstalling all of my packages. My current driver is 'video-nvidea'.