uninstalled a program, now both my screens are zoomed in and showing desktop

[BrucePiek]

HI, I uninstalled a program. I don't know what program, it had a green icon. now, both my monitors are showing the deskop screen, and zoomed in very large.

Where can I see what I uninstalled and just go install it again?

Please help, this is my work PC.

 

[vesp3r]

green icon you say? might that be NVidia driver? it looks like this