The term we often call a phone with a black screen and unresponsive is “Black Screen of Death” because the device doesn’t respond when you press the power button or any buttons for that matter. It usually gives the impression that the phone is powered off or has a drained battery and most of the
blue light flashing
Understand more about your #Samsung Galaxy S7 (#GalaxyS7) that won’t turn on after the Android 6.0.1 #Marshmallow update and learn how to troubleshoot it. What to do if your Galaxy S7 gets stuck during boot up. What does it mean if your S7’s screen goes black but there is a blue light that keeps flashing.