Windows key + F (press them together at the same time)
Yes, that will instantly take a picture of your full screen.
It will launch a Feedback Hub window.
But close it without even letting it load. It’s ok.
Now look in your “Pictures” folder.
Look for the new subfolder that starts with the word “Feedback…” followed by a bunch of letters and numbers.
Open it. There’s the screenshot. Boom!
P.S. There is also the triple key combo Windows key + Shift + S,
or the double combo of Windows key + W.
Each has it’s own benefits. Win + F is still cool.
P.P.S. Macs/macOS? Option + Shift + 3, a triple combo. Or try it while pressing 4 instead to get crosshairs to select just part of your screeen!