My Screen Hurts.

I don't know what happened, but something happened to my screen and now there's this white circle on my laptop that makes it hard to read things. And it makes me mad. Like I didn't even notice when it happened. So how did it happen? Did I put something on the laptop closed and ruin it that way? Did it happen when I dropped it or something a couple days ago and I just now noticed? Was it someone else who used it? Was it an elf?

I don't know. But it's annoying, and I'm mad. And I want a new screen but they're expensive. And I don't want to tell my dad because he'll be disappointed. The end.