What is it, can i get the way? (Picture)?

There's just a gray square on the screen of my laptop!

Does that go away?

What's this?

Looks like a segment of the display lighting has failed.

Getting away is probably difficult either he slowly gives up the ghost himself but it can also be that you have something bright with such a small square displayed on the screen so that the dark has now burned in as the hardware looks I don't know that the chipsets are in the place behind the display and has become very hot

If the lighting does not come from the back, I have never seen a monitor

It's funny now, after a restart it's gone again, I have a guarantee. Should I just let it go now or have it examined

If there's still a guarantee, you should better have it checked before it sustains permanent damage, now it is only darker, maybe completely black

Thank you for the help first

But how exactly does this happen?

It almost looks like an LED in the backlight is defective.
There has to be an expert who can handle electronics.

There can be different causes, either defective components or not everything is produced immediately, which is why there's a guarantee, or during assembly, the contact has broken and does not always give the signal

This used to be the case with fluorescent tubes.
With LEDs, the lighting is usually located directly behind the panel.

So I had no display where the lighting comes from behind if only above, below, left, or right what you know for strange display even the TVs have an LED bar below or above in the display

I have already taken apart many monitors and laptops everywhere I had LED bars below or above on cell phones I had it from all directions but tv or pc only above and below there was never anything from behind the LEDs light up in a plastic disc which then Completely shines and so brings the light behind the display and I think it's just cheaper to let a plastic disc shine than to pave the whole background with LEDs

As hard as it sounds: this is a null statement.
Your personal experience of what you've had so far says nothing.

(Dimmable) LEDs are distributed behind the panel today to achieve dynamic illumination. Of course, this is not the case with all monitors.

It looks like the lighting in a "quadrant" has failed. Strictly speaking, it could also be a defect in the graphics card. Respectively. Loose contact (a restart seems to have helped).

S. My comment above: In case of doubt, your personal experience says nothing.

Yes, you do not know whether this laptop is already on the stand from which you are going, I only know that my monitors and televisions, which I have disassembled and changed the display, the LED's were at the top or bottom and with cell phones just somewhere around