A strange black container appears at the upper left corner of your computer screen.
A strange black container appears at the upper left corner of your computer screen.
For the last few days, every time I start my computer, this (The first screenshot) appears on the top left of my desktop screen. It's resizable by dragging it(The second screenshot), and appears to be a blackbox with white outline on the top and I have no way to close it. Has anyone experienced this issue before, any help will be appreciated!