Pop up the back cover and flip the tab open, you will see the black ribbon cable ,you will see a piece of tape over, pull the piece of tape off while gently holding the black ribbon down, normally the ribbon cable is loose that's why the screen is black, so in case you have nails or small fingers, get under where the ribbon connects and pop it up, then slide the ribbon back in gently with a finger so that you cannot see any silver connectors hanging, and then flip the little black piece back down (the piece where it connects) and then power it back on , it should be fixed
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Pop up the back cover and flip the tab open, you will see the black ribbon cable ,you will see a piece of tape over, pull the piece of tape off while gently holding the black ribbon down, normally the ribbon cable is loose that's why the screen is black, so in case you have nails or small fingers, get under where the ribbon connects and pop it up, then slide the ribbon back in gently with a finger so that you cannot see any silver connectors hanging, and then flip the little black piece back down (the piece where it connects) and then power it back on , it should be fixed