every time I put an SD card into my wii it say's the device inserted in the SD card slot cannot be used!!! help me pls.I have a HP 2 gigabytes SD card
try another sd card. maybe the one your using is defective. maybe it is locked. look at the sides and find the unlock slider and make sure its not locked.
Try using another one and see if it works. Try a 1GB or less if possible. This happened to me when I put a 4GB into my Wii. Still doesn't work. Too big.