Starts charging then stops

My sansa starts charging(i see it on screen) and then stops(on sansa screen battery isnt shown to be charging) and my Pc and a few others doesnt recognize it…what should i do?

Change your USB Mode to MSC and Plug it back in. If that dont help, make sure you have Windows Media Player 11 installed, then switch your USB mode to MTP and Plug in.

Thanks I’ll try that…im gonna keep it pluged in for a hour or two just in case. Its not posible that t goes idle, or something and because of that shows its not charging?