Lately my cousin made my laptop look like that, so I didn't shut it down. And now when I turn it on this ventilation or something really loud and the screen is black all the time, it doesn't load properly either. When she turned it off my laptop was also working so it loaded a game and sometimes it crashes because it's too much work. Maybe that's why? I don't know what to do now.
Remove the battery if it is a Windows pc. You can also look at the hard drive
I can't help with mac
but it could be that your cousin slammed the laptop too hard and the screen was damaged in that case a professional repair is necessary
Wait for it to be completely exhausted, and then try again
