Warioman

Finally I got a wiikey 2 modchip in my Nintendo Wii. I started to burn a couple of backups, and they worked fine. After a while, I burned more backups and lots of them worked, and lots of them didn’t. Recently, some of the backups won’t load anymore, and some of them will. The games who manages to load will get an error message during the game, mostly in a “loading” screen. I tested an original game and it got an error message too, after playing a while. I’ve also noticed that the Wii makes another noise than usual when there is a disc inside, and I find that very strange. What should I do to fix this? Please answer!

I have version 4.1E and the Homebrew Channel installed