How to take a screenshot when not signed in?

Is it possible to take a screenshot in Windows (10) when not signed in to a user - (I.e. user select/sign-in screen, keel panic, etc.)? In such situations the clipboard is inaccessible so the print screen button doesnt work.

For instance: I have an error message which comes up after a particular user logs out. I would like to be able to screenshot this error message.

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