I turned on the Wii and now it wont show the menu. it would turn off with the power button, I had to unplug it. Turned it on and its the same. i checked the cables, left it unplugged for 30 mins. it accepts disks but no Wii Menu. i soft-modded with the twlight hack.
I also have this problem, I got it by updating using the original mario power tennis for the wii.