Things You'll Need
Instructions
Hold "Reset" on your Nintendo Wii. Press "Power" to turn on the system, and continue holding "Reset" until the boot menu is displayed.
Scroll down to "Autoboot" and select "System Menu." Click "Ok."
Press "Power" to turn off your Wii. Remove the SD card containing Crazy Intro from the slot on the top of the console.
Insert the SD card into your computer's SD slot or reader. Navigate to the card in My Computer or Finder.
Delete "Crazyintro.DOL" and the "Crazyintro" folder from your card and return the card to the SD slot of your Wii to complete the uninstallation of the software.