[SOLVED] Dark corner in monitors

[matti12345]

Hello. I want to ask what do you guys think about this problem. Can this be a gpu problem or motherboard problem? I have GTX 1660 which is almost 2 years old and my motherboard is asus PRIME B450-PLUS. Around 2-3 weeks ago when I started my PC my left monitor's bottom left was dark. It looked like the monitors backlight was broken and so I though, but the next day all problems were gone. All was normal for few days, but after that, I have gotten the dark corner to other sides of the screen and to my second monitor. They appear after starting or when my PC is left on hold but at first they vent out with restart but now even restart is not working. Sometimes it helps to disconnect monitors and connect them again but now even that did not help. What could be the problem?
picture of the dark corner.

https://imgur.com/a/kMNf17e

View: https://imgur.com/a/kMNf17e

 

[haseeb98ahm]

It's most likely your monitor's backlight dying. Backlight power connector could be lose that might be why it keeps fixing and breaking.

 

[matti12345]

It's most likely your monitor's backlight dying. Backlight power connector could be lose that might be why it keeps fixing and breaking.

But how is it in both of my monitors? And it is not in the same corner always. sometimes it is in left bottom, sometimes right top corner. I don't think both of my monitors have same backlight issues when they are completely different monitors. Other is asus other is acer and the problem came at the same time. Also I have been experiencing some other problems. Once when I tried fixing the dark corner by changing monitor rotation in NVIDI-control panel, my left monitor vent totally black. even restart did not work. In the nvidia control panel the monitor was showing, but settings were grey and were not available. What could cause this?

 

[InvalidError]

That is one very weird issue to have. Can't think of any hardware issue that would cause random "local dimming" issues across multiple different monitors.

A monitor randomly failing to activate after an orientation change sounds like it may be a GPU issue: as far as the monitor is concerned, there is no difference between the same resolution in portrait or landscape, it is the GPU doing all the work of re-arranging pixel packing for the orientation change.