I have a Blackview BV7000 Pro . After a charge of 8h the phone dont want to light on. The light LED is on but not the screen. The screen remain off : no text, no image, no logo, just something "grey". No boot. The screen was not exactly black. But the phone is not working. Is it possible t...

Screen remains off (Black), but the Led light was On (BV 7000 Pro)

Before the first utilization the phone was charger 5h. After this the screen remains off (no picture, no text, no logo, nothing on the screen) but the Led light was on.