Creative zen 4GB will not turn on, only blue light!!

Went for a run this morning using my wonderful zen. Got back and turned it off. Wanted to use it in the gym this evening and noticed that there was a blue light on with nothing on the screen. Tried turning it on but nothing comes on the screen. Tried plugging into my pc, and my pc recognises it but shows no charging icon on the player. Tried the reset button, tried pressing play for duration the reset and on, but nothing will work!! I'm very very upset only had it for 4 months and i've grown quite attatched, working out without it is just not the same. HELP!!