|Try resetting the AC adapter on the wii|
1 Unplug the Wii AC adapter from the wall outlet.
2 Disconnect the other end of the Wii AC adapter from the Wii console.
3 Unplug any USB devices from the Wii USB ports.
4 Plug the Wii AC adapter back into the wall outlet after leaving it unplugged for two full minutes. Do not plug the AC adapter into a surge or power strip. Instead, plug it directly into a wall outlet,