My prt scr button wont work?

Im trying to take screen shots of games & my prt scr button isnt saving them to gallery or screen shots? I was told to click the fn button but i dont have one & not sure how to use paint or where the heck it is? My husband usually takes care of my computer stuff but he doesnt know anything about this? Im... show more Im trying to take screen shots of games & my prt scr button isnt saving them to gallery or screen shots? I was told to click the fn button but i dont have one & not sure how to use paint or where the heck it is? My husband usually takes care of my computer stuff but he doesnt know anything about this? Im literally grinding my teeth! Thanks!
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