No one will like to hear this, but you may need to send in your console to "N" to have it repaired, or you may need to replace the disc drive yourself (which would be cheaper). You may have a disc drive that is faulty or damaged in some way. Softmodding it would not help that part, nor would you be able to rip your games to a HDD from your wii. If you have a warranty, I would take advantage of it. If you don't, then I am sorry, you may need to do one of the things I said earlier.