Edge 7 will not turn on it blinks with a green line on the side

[AC Question]

The edge 8 was working fine then started blinking with a green line along the right side

 

[B. Diddy]

Welcome to Android Central! Does this persist after a reboot? How about Safe Mode? https://support.t-mobile.com/docs/DOC-25053 Or after wiping the cache partition? https://support.t-mobile.com/docs/DOC-25076