Refer to https://learn.microsoft.com/en-sg/answers/questions/5891243/getting-print-screen-to-work
open Settings with Windows key + I, go to Accessibility on the left, scroll down to Keyboard, and turn off the toggle labeled "Use the Print screen key to open screen capture." After that, PrtScn will go straight back to copying the full screen to your clipboard, so you can paste it into Word, Paint, or an email with Ctrl + V exactly like before — no more dimmed screen or toolbar getting in the way of what you're trying to capture.
Alt + PrtScn copies only the active window to the clipboard, and Windows key + PrtScn saves a full-screen capture straight to your Pictures > Screenshots folder.
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hth
Marcin