The case mod is going to make cause trouble with nintendo. You had to open the case to do the mod right? Then no warranty repairs for you. Remove the sd-card and dvd, check for 2 flashes from the blue led drive light. Backup and format your sd-card, extract cboot2_wadmanager_1.5_mod.zip to sd:\ and boot the wii with the card it. Does wadmanager start?