Today I decided to boot up Skyward Sword on my Wii U, but it wasn't able to be read. It isn't a brand new disc as I played it on the Wii before, but it is one of the cleanest discs I have. Every time I put a Wii game in it says that it is an invalid disc and cannot be read. I tried launching the games from both the wii u menu as well as the wii menu. Wii U games are played without any problems and I have played Wii games before just fine, but now I can't play any. I've tried shutting the Wii U off and on again to no avail. Forums aren't helping at all as they all just come back to using the wii menu or making sure you have a wii remote. Any help would be appreciated.