In some instances it does and in others it doesn't, either it be backups or original discs.
When it does, the menu to play the game pops up and lets me play, but sometimes it straight out decides to not work and when loading the disc the system turns off, or sometimes in the middle of playing it turns off as well.
This happened to me with Mario Kart Wii.
However it does read GC discs (originals obviously), and yet it turns off when inserting a wii disc (like I said, either backup or original).
When it does, the menu to play the game pops up and lets me play, but sometimes it straight out decides to not work and when loading the disc the system turns off, or sometimes in the middle of playing it turns off as well.
This happened to me with Mario Kart Wii.
However it does read GC discs (originals obviously), and yet it turns off when inserting a wii disc (like I said, either backup or original).