Im sorry, your answer wasn't claear on what I should do or i just didn't find your answer to my question
Of course it wasn't clear, no one has responded to your question yet. And double posting about the same issue is against forum rules.
... apart from anything else you have provided no details whatsoever. It is hard for a helper to help without any information!
Pause on the ‘Power’ button Hold on the ‘Power’ button for at least 30 seconds, after taking out your system’s battery and removing its AC adapter cord.
Reconnect your laptop
Once you hold on the ‘Power’ button for 30 seconds, reconnect your laptop to the wall power as pausing on the power button drains any static electricity causing the black screen.
Replace the battery
Mostly, a worn out battery causes the black screen of your laptop. You should replace it with a newer one.