Impossible to charge my ipod nano 5th + not detected by my computer

Hello,

I have an Ipod nano 5th generation 8GB and when I plug it on my computer nothing appears but the Apple logo on the Ipod screen. I let it a long time (one night) plugged on my computer, hoping the battery will be full and it will work again but nothing...

Something else : I can't see it on my computer... Neither my computer nor Itunes detects it.

I use Windows 7 and I have the last version of Itunes.

I think I said everything...

If somebody could help me, it would be awesome! If you need any other information, just ask me 🙂

Thanks in advance for your help!

PS: sorry if I made some mistakes in English (it's not my mothertongue ^^)