To take a screenshot on Windows, press the PrtScn (Print Screen) key to capture the entire screen—this copies the image to your clipboard, which you can paste into an app like Paint or Word. For a more specific capture, press Alt + PrtScn to grab just the active window. You can also use Windows + Shift + S to open the Snipping Tool, allowing you to select a custom area. Screenshots taken with this method are saved to your clipboard, and you can paste or save them as needed.