My brother accidentally slam his fist hard into my upper part monitor of my macbook air; Will this damage the monitor in any way?

did he slam it with lip OPEN or CLOSED. Big difference.

Wires are in the hinge not near upper portion of monitor........., IF the monitor STILL opens and closes smoothly and the screen has no dead pixels, I wouldnt worry about it 😊

Also if no hairline cracks in the screen, no worries.

Only Genius Bar can tell you, unless you have seen some effect yourself.

Seems your parents may need to explain the financial consequences of breaking expensive computers.

Probably not. Does it turn on? Does it work? Then it's fine. These things are built to withstand some knocking and hitting. I bet the display part is designed to flex a little bit and tolerate some banging.

if the monitor was closed, it would be a solid hit as a unit in total, little chance of damage since alloy case of monitor was struck

if the monitor was punched on the SCREEN SIDE and open then there is a possible :

A: crack in the screen

B: break in the LCD behind the screen

and regardless of punched from front OR back of monitor:

C: hinge(s) being torqued and damage to one of the 2 friction hinges that hold the monitor, which would cause the the monitor to be skewed when closed, and change how the monitor opens / closes

Yes on what Steve says below,.... if you think your Mac is sick after getting a black eye, take it to the Apple store for a free check up 😍

If you have any doubt, talk to the Genius Bar.

I did not suggest either "broken" or "just fine" becuase I do not want you to act based on *my* "probably" and find out I was wrong later.

Your appointment at the Genius Bar for an evaluation is FREE, in warranty or out.