Instructions
Check your connections. Make sure the AC adapter is plugged into the Wii and the wall outlet, and that the audio-video cables are plugged into the console and the proper connections on your television.
Disconnect the AC adapter from the wall outlet if the Wii's power light is on but the game will not play. Wait for two minutes and then plug the adapter back into the wall outlet.
Synchronize the "Wii Fit" balance board with the console. This device, which is used for most of the exercises in the game, must be synced with the Wii before it will work properly. Remove the battery compartment cover and press the red button, then press a similar red button located on the front of the console in the SD card slot area.
Clean the "Wii Fit" disc if you see any dust or residue on it. Find a soft cloth, but do not wet it. Rub the disc from the interior of the disc to the outside to prevent scratching as you clean.