hmmmm....
i am only going to suggest this because u have bootmii as boot2 (any1 reading this with similar problems, do not attempt unless u have bootmii as boot2)
1) make a nand backup of your system as it now (just in case we make the problem worse, we can always get back to the state u r in now)
2) get
Comex's nand formatter HERE and read up on the details on how to use it, use that app, in conjuction with bootmii to format your nand and reinstall everything on your wii from scratch (ie. u will need files like EULA, Region Select, System Menu, Sys Menu IOS, and 2 other IOSs required to install the HBC, etc., just get them all from NUS)
3) hopefully this will solve your problem, if it doesn't (or if it makes things worse), just restore your nand backup from step 1. If it does work, u will need to reinstall the HBC using bannerbomb, then u can install the rest of the active IOSs using wad manager (u can use my
NUS AUTO MOD to make this part easy for u). Then u can proceed to re-hack your system using a good guide