I get a black screen with a frozen underscore when I try to boot into clover

When booting into my USB, that’s all I get. I’ve been using this guide (https://forum.amd-osx.com/viewtopic.php?t=4127) but also used the official AMD High Sierra images which yielded the same result.

My specs are:

FX-6300

GTX 960

8GB Ram

Asus M5A78L-M PLUS Motherboard (Legacy)

Any help would be greatly appreciated, thanks :)

EDIT: What I get on my screen - https://ibb.co/2jWGQg2