Wait. You first wrote "the white man stucks in the middle of the screen and he does not react to any touch."
Now you're saying "the white man shrugs the shoulders and it is impossible to make him move away from that position"
If he is shrugging his shoulders then you are not frozen. That's what I thought had happened; a hardware glitch.
But it's simpler than that... You are stuck in a puzzle my friend!
Find out what the white man (called Gnome, btw) wants from you.
Good luck. There are many walkthrough videos available on YouTube if you need to see what to do next.
edit:
here's one