2014 MacBook Air Wont Boot

My 2014 MacBook Air recently stopped working, so now when it finishes the boot it does not go to the login screen. I tried entering Recovery Mode, none of my disks has storage not even my external one, and I tried to backup that one since, and then I tried Safe Mode, and it did not boot, too. Then I tried Apple Diagnostics, but then the fans started making loud sounds and my Mac was getting hot, so I turned it off.