My creative zen won't switch on. Nothing.....not even music and blank screen, nothing. It worked

Question

Nothing.....not even music and blank screen, nothing. It worked last night on way home and this morning was dead. It had a good charge in it and was not dropped or bumped. Wasn't left on overnight either....I can return it easily but want to make sure there is nothing obvious I've missed.

Thanks
Scot, Glasgow

it was pluged in to computer and wont turn on now