This happened to my wife's phone I used rsd to flash back to stock and it fixed the problem. She wont let me root anymore though

. Just power up the phone and wait a min. Plug it into the PC and pull the battery. Then power on into the bootloader holding up on the d pad and power your phone should show up on rsd the flash the sbf pay attention and be ready to hold up when it reboots should fix it if not your back to stock and can go get a replacement with no worries.
Sent from a galaxy far far away.....
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