My M4022 Mp4 Player from Light in the box.com?

I got one of those light in box.com Mp4 players the M4022 to be exact & it's been 12 months now since I had it.Last week it started to charge up like it use to so I just let it be plug up then today when I went to turn it on it wouldn't at all I mean I wanna know should I send it back to them or fix it my damn self?

The battery is a 3.6v flat pack Built-in Rechargeable Lithium-Ion Battery...