well the problem started when i downloaded the ipod updater and i tried to update the nano.. it said error updating it and the exclamation mark folder appeared on my nano. i unplugged the nano and realised my computer didnt have the nano software so i installed using the disc provided.. during installation procedure i had to format the nano so i did it and then it said the battery needs charging when it was half full. so i unplugged it and plugged it bak in to computer and it didnt recognise the ipod. it wouldnt charge so i used my charger adaptor and it wont charge or switch on. can anyone help me? and tell me why it wont switch on or charge??