So my Wii was working fine and I had a bunch of installed channels (MM9, Bomberman, CFG USB Loader) and all of them were working just fine. Took my Wii to a friends house and we played just fine. I bring it back home, hook it up after a few days of laziness, and now I just get black screens trying to boot any of them.
The Homebrew channel still works however, but running the USB loader doesn't work from there either.
The Homebrew channel still works however, but running the USB loader doesn't work from there either.