iPod is locked, tried computer, tried iPod buttons

I was able to play in car, at work on docking station and with earplugs.

Now it has a lock showing, I have tried the Hold button on top, back and forth.

Tried the Menu-Center Button hold, No Apple Screen. Same with Play-Center Button, Menu-Play Button.

Tried the computer, did find ipod control, devise, but there is no lock to be found.