I was sitting in the first row and a young professor wanted to demonstrate something, he was young and looked nervous and didn't think about it. And then because he wanted to be funny he took my laptop with one hand on the screen and asked "Have I already acquired ownership of the laptop if I take it on my own?" Then he put it back after the question but now the screen is somehow loose and not as before. What would you do?
To the school management, the insurance of the school has to pay this damage
Talk to the teacher, I would do that
Have you ever wanted to talk to someone? Has the laptop really been completely destroyed (as you say in the heading) and no longer works? Why didn't you say that immediately? That is noticeable. Now, in retrospect, it should of course be difficult to prove that the part was "destroyed" by picking it up and you didn't say it straight away.
Just talk to the teacher that this condition wasn't there before.