So I've had this problem for a few days now : my laptop screen doesn't seem to be detected anymore.
The laptop boots and runs normally but the only screen it recognizes (and seems to consider as main screen) is an external one (on the vga plug). Even if I boot the computer without it, I get nothing at all on the laptop's screen. Windows doesn't seem to know there's another screen either.

I'm not really sure what happened, but if anyone as an explanation / solution, it would be very helpfull.