Just as a warning, if you bought the Wii brand new, opening it up yourself will void your warranty. If it’s new, call up Nintendo and talk to them, they’ll fix it for you for free usually. FYI mine makes a burring noise while loading discs, but does not burr constantly during play. I would compare your Wii with another to make sure it’s not just a loud machine by default and thus there is no problem. Even if you wanted to crack it yourself, you won’t have the proper replacement piece if it is a busted piece causing the noise, and it’s very risky to open up the disc reading mechanism and get it working afterward if you’ve never done it before…