Seemed to just happen suddenly. Went to bed and it was fine and it was like that the next day. I’ve attached a picture of the error screen, it’s the first thing that pops up. Could this be something loose inside from dropping or transport? There is endpoint security on it, could it be to do with that? I’ve tried a PRAM reset and the only difference it makes is I now hear the start up chime before i see the error screen. Anyone have any ideas? --- Post Merged, Mar 28, 2018 --- I sh ould mention it’s a 2015 MacBook Pro.