There are no Internet connection related firmware problems.
How to reset the router and start the setup process - User Manual, Page 16
I'm really trying to help here, but don't ask me to read the manual for you, please.
It doesn't seem to be an internet connection problem, using my ISP router the internet connects no problem. It's this router that is having trouble, and since the web UI doesn't even load properly I thought it'd be a problem on the router itself.
I'm not asking how to reset the router, I'm asking how to clear everything stored on the router so that I can start from the very start to eliminate any errors I might have caused.