iPod touch menu not accessible

I plugged my ipod into a different computer in order to charge it and when I unplugged it, the menu screen was not accessible and the only screen that it showed when I turned the iPod on, was the screen with the Itunes logo and a USB cable going up to it. THe computer that I connected it to does not have Itunes so I dont think that it was trying to sync up to it or anything. HELP PLEASE - I just got this thing and I am not electronic savvy