Windows 10: Monitor has a black square on top left

Hello, my setup is a laptop that is connected to a monitor. When I close the lid of my laptop even tho in settings I set it to not do anything, on my monitor top left a black square appears and it annoys me. If the lid is open the square dissapers If I then open my laptop again it automatically puts the display settings to extend the displays even tho I set it up as show only 2 sometimes it sets up as show only 1. I know it's a small thing but it distracts me.

:)

 

Black Square in Upper Left During Extended Monitor Session

Hi,

I have been using extended monitor for quite sometime but all of a sudden there was a black square in upper left of my extended monitor.

In the past if i close the lid of the primary monitor, this problem did not exist.

However, I have started to experience this now.

I do not have ASUS AI Suite installed in my machine.

Also, I noticed that the black square in extended monitor happens only when i totally close the lid of the primary monitor (laptop).

If i have it opened the black square in the extended monitor does not appear.

Any tips on how I can resolve this issue? I would like to close the laptop lid when I do extended monitor.

 

Black border around monitor

I tried the steps you suggested and it did not change anything regarding the black border. I am trying to come up with a better explanation, the information on my screen has a black frame around the information on my screen. The display does not go from
corner to corner of my display monitor. There is a 1 inch thick black bar on the left and right sides and a 1/2 inch thick black bar on the top and bottom. I attached the screen shot per your request but it is only showing the information on the screen up
to the black frame. I can get rid of the black frame by going to a lower resolution but I didn't think that is the right solution. I should be able to upgrade to windows 10 and still have the recommended resolution for my monitor.

 

Transparent square on top left corner of screen after Windows update

Good day! I'm Raniel, an Independent Advisor and a Microsoft user like you.

I found an article with a similar issue that you're experiencing with the transparent square. Kindly follow the steps provided by Greg Carmack - Windows MVP 2010-20 and see if it works for you:

https://answers.microsoft.com/en-us/windows/for...

I hope this helps.