Happened after the last charge.Tried to hard reset, without any luck.
I had similar issue. It restarted after pressing 3 buttons together: red start+…(top right) +return (low right)
Did it work?
Today I had the same problem. The Edge was keeping beeping and did not react to button presses, Display was black.
Loose connection? Did you drop it? I dropped mine, even with a rubber case the screen connector came loose. I cracked it open, reconnected and then sealed it up. A bit tougher than I make it sound!