UPDATE: The issue is resolved. I booted into safe mode and then disabled the GPU device there. Then I rebooted the pc and it booted on a very small resolution, but at least the pc was functional. I then disabled my anti-virus software (just to be sure) and uninstalled the AMD driver. I downloaded the new driver (Adrenalin Edition) on the AMD website and installed that with the anti-virus software still off. I then restarted the pc and there were no issues.
I don't know what caused the problem, maybe I should've done a clean install of the driver from the start? Or maybe it was the anti-virus, I don't know, but at least people can use this if they have the same problem.
MODERATOR NOTE: I am glad to see you have resolved your issue. To help keep this post on topic and help other with a similar issue, I am locking this thread.