Windows 10: White quarter-circle appears in the corner of the screen

Hi everyone, I've been experiencing a problem with my Lenovo Yoga 7i. A few weeks ago, I noticed a quarter circle white artifact appearing in the top left corner of my screen. Concerned, I ran a full antivirus scan to check for any malware or viruses, but the scan came back clean and reported no issues. Despite this,&n

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Quarter size Circles in the screen take control of the mouse

Hi,

• Did you check if you are typing in the correct password? Click on the eye icon right to the password to see if you have typed in the correct password.

Try the below steps to resolve the issue;

• Press the Windows Key and the Spacebar at the same time to check the keyboard language and layout. While holding the Windows Key, press the spacebar repeatedly to change the keyboard layout.
• If you are signing in to Microsoft account, from another device, verify that you can successfully sign into
  http://account.live.com with the same Microsoft account email and password.

Once you sign in, please follow the above instruction as I have given and check if quarter size circles are appearing.

Hope you ca sign in.

Keep us updated on the issue, we will be glad to help you further.

 

Windows 11 white circle in the lower-right corner of the screen, tangent to the taskbar and the screen's far-right edge.

Unfortunately, I methodically poked through the extensive listing that Autoruns provided and nothing seemed out of the ordinary.

After a logoff the lower-right corner white dot disappeared -- I had scheduled a boot-time virus scan at a "high sensitivity" level already & so did a reboot and no infections were found.

The white dot/filled-circle has not appeared since (it's been 5 days now).

 

Quarter size Circles in the screen take control of the mouse

I am having a problem with quarter size circles appearing on my screen that flicker. When they appear the mouse is out of control, programs open and close by themselves, the screen scrolls. I tried to get help from Microsoft Tech Support, they installed
and removed spyware, cleaned programs that I did not use but the problem did not go away. Has anyone experienced this problem. It started to happen after I upgraded to Windows 10

Thanks