Small square box at bottom of screen during start-up

Sep 25, 2018
Hello. I have an HP Probook 640 G3, running Windows 10 Pro x64, and when I turn on my laptop, after a second, a small square box appears at the bottom of the screen. Does anyone know what this is / what it's for? I don't think it was on there at first. Unless it's supposed to be there, I'd like to get it off. Does anyone know how? Thanks.

P.S. My laptop is touchscreen, so I tried touching the box, but nothing.



Question from jw04826 : "Small box on screen during startup"

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