Windows 10: What do parts of my screen have grey pixels when I'm watching a video with a lot of black...

When I try to watch a video that has a dark scene with a lot of black color, parts of it look grey and pixelated. And when there's a scene that includes a bright white light, most of the screen look grey and pixelated. I don't remember this happening in my old laptop. I took some screenshots and photos to compare and they definitely look different. So, why's this happening?

:)

 

Black screen during and after watching video

Cause: I have a problem with my new Windows 10 PC that during streaming a video the entire screen goes black at a random point during the video. This occurred multiple times when watching a trailer using the Steam application (full screen) and also in Microsoft Edge when streaming an Adobe Flash video (not full screen). It doesn't seem to be exactly reproducible, watching the same video again doesn't always crash it. This hasn't occurred on YouTube (HTML5 video) in Firefox (yet?).

Effect: The sound continues but the screen goes black. Only the cursor is still visible. Even key-combinations like Ctrl+Shift+Esc, Ctrl+Alt+Del, Win+L (Lock user) and Ctrl+Win+Left/Right (Change desktop) doesn't unblock the screen. It seems like the computer is still working because the cursor changes to the resize cursor or select cursor at certain positions on the screen. Switching the monitor off and on again doesn't help either. After hibernating the computer (using the power button) the same effect is present but now the screen is grey instead of black. The only way I found to get rid of this effect is to completely restart the PC.

SW-Versions: I have the newest version of Windows 10 (at the time of this writing, 06.06.2016 14:30), the newest version of Flash (21.0.0.242), the newest version of Edge (25.10586.0.0 / 13.10586), the newest version of Steam (Package version 1461972496) and Radeon Software Version 15.11 (Graphics Chipset: AMD Radeon (TM) R9 390 Series).

Any ideas how to preferably solve the problem permanently or just how to "snap out of it" when it does occur?
Thanks in advance!

 

is n8's screen is pure black or not? is it a problem of AMOLED?

last night i used to watch videos in my n8 in a dark room, i found that the screen is not pure black, is it a case with all n8's and even in all the videos including youtube the black coloured portion is appearing like blue, dark grey pixels but not black,
y it is like that!!!!!!!!!!!

 

Black screen error

Hello,

There are several reasons why you are facing a black screen issue. One of these is due to outdated or incorrect device drivers. For us to figure out what's causing this, provide more details by answering the listed questions:

• Can you confirm to us if you are using a laptop or a computer?
• Have you made any recent changes to your device prior to this happening?
• What exactly were you doing when the error occurred?
• Have you tried any troubleshooting steps to resolve this? If yes, specify all of the steps that you have done.

As an initial part of troubleshooting, we suggest following the steps given on this article:

Troubleshoot black screen or blank screen errors. This will help you diagnose and rectify most of the known black screen concerns.

We will wait for your response.