Chosen Solution

My phone screen is all black and I can only hear sounds of it turning on.

If the phone has not been dropped or suffered shock damage it may be worth trying the following: Use the Power button and Volume Down button.Press and hold those two buttons for a couple of seconds. Usually, it takes around 7 seconds or more before it works.The phone will go off and reboot. You can release both buttons and wait for the phone to reboot and start operating again. Good luck :)