what is this and how to fix it?

>>136942
fix what?

>>137513
monitor

cable is probably damaged, wiggle/move it slightly until the picture clears up, or replace cable if that doesn't work.

monitor could be fucked as well.

>>136942
Looks like you stepped on it or smashed the screen there at the bottom... That's what happened to mine.
Have you tried turning it off and back on again? If not, might just need to get a new screen.

>>137522
It looks like a laptop. Look there at the top on the sides of the webcam.

>>137525
yeah i'm blind, my bad.
in regards to that, replace LCD.