I purchased a Bass PODxt live about 16 months ago and its been great until last week when I turned up a band practice switcthed it on and nothing apart from the back light on the display, I've been on to the shop I purchased it from and its out of warranty, DOH i've tried to plug it into my pc to reinstated its memory and my pc carn't even recognise that its been pluged in, has anyone got any suggestion.