Try loading priiloader by holding reset, then power on while holding reset
Try loading maintenance mode by holding + -, then press A while holding + - at the health screen.
Load savemiifrii, see what version is displayed in the lower right corner, if it says 3.2/3.3k your screwed.
Remove sd cards, dvd disc, usb, and boot the wii, look to see if the blue led drive light flashes once or twice. Twice would indicate boot2 bootmii.
As long as savemiifrii does not say your have 3.2/3.3k, you can fix it.