Hey Nancyae. It sounds like a NAND problem. This could be classified as a semi-bricked Wii. Your best bet is to have BootMii installed as Boot2, and run a NAND restoration. You need the NAND.BIN and the KEYS.BIN to do this. If you don't have homebrew, then, well unless you want to knock yourself out trying your own methods to fix your problem, a repair by Nintendo is a good option. Let me know if I can help you in any way.