I gave my laptop for repair with a broken screen hinge. They fixed it, but.. Now the screen is not held in an inclined position, it just falls down. When I took it, I told the master about it, but he told me about the self-locking screws and that someday nothing would fall. I believed it, I was in a hurry and there was no time to argue and force to redo it again. For several weeks, nothing has clamped down on itself and has not been corrected