My Vivoactive 5 was discharging. Out of the blue, it shutdown. I it put to recharge and the screen was still black, no lights, no vibration, no sound. I tried the soft reset, the factory reset, cleaning the contacts of the charger. I also changee the cable but nothing is working. The device is connected but after one day it is still black screen. Completely dead. Does anybody has a clue of what is going on?