The Print Screen function is a system-level feature in the Microsoft Windows operating system designed for digital image capture of the graphical user interface. Historically linked to the SysRq (System Request) key, the modern PrtScn key serves as the primary hardware interrupt for screen capture.
If your Print Screen function is not capturing images, try the following troubleshooting steps: windows print screen function
Alt + PrtScn captures only the currently active window (not the whole desktop) and copies it to the clipboard. The Print Screen function is a system-level feature
Windows offers several ways to capture your screen, depending on whether you want to save a file or just copy to your clipboard: windows print screen function