I have a 1 month old Straight Talk Samsung Galaxy S7. The screen suddenly went black. I can get it to reboot by pressing volume down and power. It then goes to the blue tracfone screen and then to the screen where I enter my 4 digit pin. It then goes to the unlocked lock icon screen with the circle and thinks for a bit and goes back to black. I have tried various combinations of pushing power up and down, home and power buttons. I did get it to wipe the cache partition also. My main concern is getting photos out of a private folder. When I connect the phone to my computer, it says no files found. I did take my SD card out and the hidden photos are not there, as far as I can find. Please help! Thanks.