On my laptop, the screen is black suddenly?

When my laptop is the screen suddenly black when I start it up only the light left the circle is blue what can I do?

Go into a dark room and tell me if the screen emits light (the light is usually very dark / faint and has a slightly bluish tone).

No no light

Connect external monitor. Otherwise something is wrong with the graphics card or graphics unit.

Then the display gets no power (the cable could be damaged from ever-opening and closing).

If you see in the right light something very dark, schlernartiges, what could be the desktop eigendlich, I would guess that the backlight has failed. In any case, this fits the diagnosis garkein light from the screen more…