Some keyboard keys are mixed up

I hit an unknown combination of keys that changed my keyboard, and it started to do weird things with the @ and # keys—instead of @ I got “, instead of ” I got @, and instead of # I got a British pound (currency) symbol!

Off to Google where I found information about checking my Windows 10 region, language, and keyboard language settings—but everything was fine and as it should be. My next step was to reboot and see if that fixed the problem, but one last attempt at Google… and there I found the answer on a Quora post.

If you press Alt+Shift, you get a little popup that allows you to switch the keyboard language. Alternatively, go to the System Tray area and click ENG then set the keyboard language—the one highlighted in black is the active one.