Load hbc, then load bootmii. Make a nand backup. Load priiloader and load one of the wii system channels, like news or shop. You should be able to sync your wiimote in any of the official N channels. Let me know if the channel loads and you can sync, or if the channel does not load.
If you can't sync or load those N channels, your bt module is likely dead or lose. You can also sync from wii games, so if you load a disc via neogamma you could sync wiimote. Games don't like to load with bad bt module, niether does the system menu, or channels, or anything that can sync wiimote.