After posting that, I decided to do a nuclear approach and test everything in another Gamecube. I removed the picoboot, installed it in the other and everything works flawlessly. All of the cards and adapters I have worked immediately. I re-install into this gamecube, and it's back to the same black...

I know there's been many threads about this type of thing, but I've tried every potential solution in every thread that I can find to no avail. So, at this point I'm pulling my hair out (almost have an actual mohawk at this point) and really struggling to find a solution. I have a DOL-001 Cube, howe...