Why is my Macbook screen flickering blue and grey when I start it?

Since last night, whenever I turn on my Macbook and log in, it flashes grey for a few minutes. I'm really panicked. I spent $1500, it's not even two years old and I never take it out of my room, much less take it outside where it can get damaged. I've attached a screenshot of the video I took of it on my iPad. It keeps flickering between blue and grey, until I restart, and then it's fine. This has happened three times already.

Has anyone else had this problem?.