I accidentally installed a different region firmware from a wii fit disc. My wii is an NTSC and i'm not sure where the wii fit disc was from. Anyways, now as soon as i power up the wii it goes straight to black screen that displays the message "The system files are corrupted. Please refer to the Wii Operations Manual for help troubleshooting". It does not go to the health screen, just straight to this message. Not sure where i can go from here. Any help is appreciated. Thanks