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How to find out what this is? Video Problem?
Attached is an image displayed on my monitor. I recently bought a second monitor, and after installing and setting up this appeared on the No.2 (original) monitor. I think it is some sort of control box that does not display properly. Seen close up it has left /right arrows faintly visible. It only appears at the end of the boot process so there is a period where is is not there. I'm pretty certain it is some app/process that loads. Is there any way to find out which. It is not clickable.