Aerobook turns black when running

Hello, I want to submit a problem with my aerobook.
Sometime when the computer is running the screen turns black and I have to wait 5/6 second to return to my work. When the pc turn on the display show the main screen where I have to put the access password.
1 month ago I’ve changed the Ssd card and I’ve reinstalled windows.
Help me please
Thanks, Foia Michele

You have to try to fix the problem, if it occurs regardless of what you do on the laptop or if it occurs in a certain application.
You should also do a check of the system files in case any of the files are corrupted.