u/Available_Abies_844

I was using my monitor for a few hours when the screen started doing this. I filmed it for a few seconds before I shut it off, when I turned it back on it displayed a white horizontal line in the center for a second before it shut off again. Now it will not turn on past POST, and just flashes a yellow status light.

Is this vertical sync failure? I want to repair this, what will I have to do?