So I bought an Official DSi Sandisk SD card 6 days ago and it has been working fine both on my Wii and DSi ... So today when I tried putting some songs on my SD card.. my pc would stuck... I know it can be my PC's fault but I have tried it on 7 differend PCs and between 4 Sd card readers and no result.... Sometimes it says something about a timeout... I would try to format it but I can't even do this in the Command Prompt... Is my SD card faulty? Please help!!!