It could be that the brightness is set too low, I think it’s the f8 key that brightens the display :)

Press one time. But note that my machine apparently has a malfunctioning backlight, so the only indication it was on was the ring of light around the power button. I had to hold the screen in bright sunlight to see anything on it. (Still waiting for support response).

So I managed to over tighten the screws and mine wouldn’t boot. I loosen the screws and it booted right away.