Windows 10: Is there a way to get rid of this transparent circle with shadows showing up on the screen?

Here's the screenshot of it:With white background around the circle to make it looks a lot more clear.This transparent circle randomly appears after I turn on my computer for a while. It just started occurring late at night yesterday. I'm worried if that is some kind of malware or something, but my anti-virus couldn't find any.If you have any way to fix this issue, please let me know. I would really appreciate it.

:)

 

My monitor has a shadow screen. How do I get rid of it?

My monitor has a shadow screen. How do I get rid of it?

 

Photoshop: Creating Transparent Images

• PNG supports Alpha Transparency, that is that the image can have different levels of alpha (or opacity) throughout.
• GIF supports transparency too, but any part of the image can only be either transparent or opaque. There is no gradual shift, no "Alpha" level to adjust. (And transparency eats into 1/256 of your available colors.)
• JPEG supports neither form of transparency.

Internet Explorer did not support transparency in PNGs until IE7, I believe that it would show black instead of the page behind the PNG image. It did, however, support PNGs. (Which are still a great way to achieve a non-lossy, high-color image. (even without transparency))

 

Windows 10 mail app, get rid of new letter circle things?

I'm running Outlook 2016 on Windows 10 and got rid of the circles as suggested:

File>Options>People, and unchecked the "show user photographs when available (restart Outlook)"