I have some important files on Samsung Tablet but I can't unlock it anymore. I used FoneLab Broken Android Data Extraction to extract the files and all of them are back. - Roland Olson; I like FoneLab so much, as FoneLab Broken Android Data Extraction helps me to fix the black screen problem for my Samsung galaxy. - Margaret Lowe
So when it continuously goes on, it turns into a black screen and remains unresponsive for hours. For this, the basic and effective method is force reboot. To perform it follow the given below steps. Press the Volume Down Key and the Power Key simultaneously for 15-20 seconds. GTPk.