HP 15-bs108ng need help with black screen after bios update

[xhandy4alex]

I did an original bios update from HP's site, the pc did everything, then it restarted and since then I've had black screens

- I tried win + b / win + v
- I etched ram
- battery was 2.99v, i replaced it
- I also created a USB boot stick

I noticed when I start without the battery, the display flashes briefly

does anyone have an original dump?