Ipod isn't showing up in iTunes or computuer

Hello,

I have and iPod classic 120GB. Ipod won't charge or turn on a test showed it was not showing in iTunes. It will not show up to be synced. When I plug it in my computer will not even make a sound as it did before stating a connection has been made. my other usb cords and flash drives still do. I have noticed that there is a slight static sound not sure if it is the usb cord or the Ipod itself. NOTHING has worked I have tried uninstalling and reinstalling. Oh yeah it is not showing up in my computer or where the hard drive and all that stuff is. Does not show up where ipod sends me for the drop down box for reset.

Programs I think may have blocked it that I have recently installed are Google Chrome, and I did an iTunes new download that kept popping up when I went to the iTunes shop/site.

I think I have listed everything please help!