If your trying to load the GC games from the disc channel and you get audio but no video, thats a common problem when softmodding the wii. You can load GC games through neogamma but you have to install the mios patch and some other stuff to get those games to work. Youll also need to patch each game right when you load it. If you didnt want to run those through neogamma and dont want to patch each GC game to play them, you can still install a GC backup launcher and install the mios, but as long as you load the game through that backup launcher, you wont need to patch it. Just press A to load.