My SD memory stoped working. My Qtek S100 can not detect that the memory is in the divec either can my PC with a SD cardreader. Any suggestion what has gone wrong? I can't format I can't do nothing with it. Is there any more specialized software to low format SD memory via Card reader? In the PC I?m running XP. I have tried the card reader and the SD memory in several PC's also other SD memory works fine in the cardreader and in the Qtek S100 device.