My iPod won't come up

hello, for a long time now i can't use my ipod touch 4, since it won't come up

i can't turn it up, because the battery is always dead, but if i charge it or connect the usb to my pc, then it show this logo:

http://i59.tinypic.com/n53a6w.jpg

what can i do to get rid of it?

i tried almost anything.

thank you