hi everyone, I hope some one can help with this problem, a couple of weeks back my tom tom stopped working, even when on charge it will not work, the home screen lights up and the drums play and then after a few seconds a flashing red and white cross appears in the bottom right corner, I have tried resetting with a pin but no joy, I have tried connecting to my pc but its asking me to insert the SD card but this model has one built in, any suggestions !