Chosen Solution
My MacBook never fell or anything, but since about a month my MacBook has just went black, made these pixel thingys. I turned it off and after it was fine. Now my MacBook doesn’t turn on again. Have a video of it.
Sadly, I’l thinking the logic board graphics circuit had a failure. This series logic boards are very difficult to fix. Which only leaves replacement. Hopefully you’ve been good on backing up! Time to visit the Apple Store!