I'm having this problem as well. The Neuros came in the mail yesterday and I charged it all night, well over 8 hours. However I did have the player in the backpack while it charged, and before I charged it I took out the player and then put it back in. Could either of these affect it?
I have tried taking the player out, plugging in the backpack and then replacing the player. When I do this the screen goes orange for a few seconds. If I press any buttons it goes back off. If I leave it alone it also goes back off. Right now I am charging it without the backpack, but I think it's fully charged (the light is blinking 3 times per second).
Please help! I really want to try out my new Neuros player..