So a quite few months ago i dug up my wii u i went to turn it on it worked fine but i couldnt find my controllers so i never played. Recently i found the controllers and went to play but when i pressed the power button it was just a flashing blue light i talked to someone and he said it could be slc corruption or bad ram and told me id need to defuse it and thats the problem i have no clue what that is i just read a ton of stuff about and am still confused i dont get what it is or how it will solve my problem can someone please explain it to me in the most dumbed down way.