When I start my laptop the screen stays black even though it starts up when I turn it on and off a couple of times.
When I start playing a game for the first time, it goes down and up again, but after that everything goes normal.
That's every day so I really have no idea why?
Hm, sounds like the game crashes and Windows would be set as the default action for a reboot.
Connect an external monitor (or TV) and see if the behavior changes.