I used USB Loader GX to install my Brawl and Wii Sports discs. When I tried to install another game, the disc drive couldn't read it. From then on, no discs can be read by the program or the Disc Channel. There is no grinding or scratching, it only seems to attempt to read it. Could this have been caused by the program, or is something physically wrong with the drive? Is this a good place to start? How to Fix Wii Disk Read Errors | gamefront.com
Cleaning the lens sounds like a good place to start.
Ipsa scientia potestas est.
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