There's a thread on this to fix the issue by mauifrog, however it's for folks with Priiloader already installed. Couple that with a region-changed Wii, and it makes for an iffy proposition at best. Likely mauifrog will see this thread later and maybe offer definitive advice to you. This can also happen with a bad wad install (banner bricked) and the usual solution once again, relies on Priiloader being previously installed (to preserve access to the HBC). Do you have access to HBC, typically?