So you can't load Priiloader anymore and Bootmii was installed as IOS correct? If you aren't sure, check how many times the drive light blinks when you power on (2 times = boot2 Bootmii 1 time = Bootmii IOS). If you do not have boot2 Bootmii installed, the only way to repair your Wii is to send it to a NAND programmer or Nintendo to be fixed. Nintendo may be able to detect mods (even on a full brick) depending on what types of mods were made. For example if you had boot2 Bootmii installed and then removed it for some reason, it would still be detectable in the boot sectors of the NAND.