For some reason my Wii has all of a sudden stopped playing GameCube discs. I tried popping in a game & it shows on the menu that there's a GameCube game in the disc drive but when I try to boot up the game all I get is a solid black screen. I've tried several of my other GameCube discs & got the same results. Then I tried some Wii games & they booted up just fine. Anyone know what's going on with my Wii?