You can format the system memory by going to the Wii options. You can access this by clicking the Wii symbol in the bottom left hand corner when on the main menu.
Then go to the third page. The last option will be format wii system memory. If that does not do anything then go to the parental controlls on page 2 the top option. It will ask you if you want to use parental controls. Just click no.
Hope this helps. And welcome tot he forum.
