Acer Aspire z3-615 Black screen problem

SHADOWX24

from several days, my brother was playing on an all-in-one PC (Acer Aspire z3-615) and the charger fell to the ground. He continued playing normally after that, but the next day, when I tried to turn it on, it gave me a black screen where the Acer logo showed first, then proceeded to a black screen, and when I hit the screen with a flashlight, I could see everything behind it.

-Things that I tried after I connected my PC to the TV via HDMI cable (where the display is fine) and it showed me the screen for a second before going black again:

1- pressing win key + shift+ + ctrl + B

2-alt + tab when getting out of a game or other programs to the desktop

-Things I have tried but didn't fix the black screen:

1. Unplugging and plugging all cables and charger

2. entering safe mode ( as my TV can't show anything until I reach the login page)

3. uninstalling (Intel had graphics 4600) from the display adapter in the device manager and installing it again

4-updating Nvidia GeForce 840m

P.S: I just want to make sure if there is anything I can do to fix the black screen by myself with your help or if it is necessary to go to a technician.

[Edited to add model name to the title]

Puraw

https://community.acer.com/en/discussion/707422/acer-aspire-z3-615-black-screen-problem

Try uninstalling the display derivers in Safe Mode with DDU to be downloaded for free from www. Wagnardsoft.com, don't install anything, just reboot and let Windows install the latest Acer GPU drivers: https://www.intel.com/content/www/us/en/support/articles/000091878/graphics.html