Recently my wii has been having problems with backup launchers reading discs. I have already installed different backup launchers but everytime it came up with the same error, error 972. My wii has also been crashing a lot with the original Super Smash Bros Bawl on the oficial Disc Channel, it gives the error, this disc could not be read, please press the eject button. Even though this doesn't happen everytime, it sometimes crashes and it is very frustrating. Is this a dirty drive laser problem? If so could you please tell me how to clean it. (Ps I have had this dirty laser problem with my ps2 before and have cleaned it and now works perfectly. Please help me!