RESOLVED! LG G3 Reboot Restart loop issue

My LG G3 randomly starting switching off and trying to restart itself. I read that some people said it was battery related, and bought a new battery but it didn't resolve it. I then took it to a mobile repair shop who wiped it clean, but after 2 hours it starting doing it again. I finally did a bit of research and found a solution myself. Here's a video of what worked for me. I hope it resolves your issue too.