Press PrtScn to copy the entire screen to the clipboard
Press Alt + PrtScn to copy the active window to the clipboard
Press Win + Shift + S to open Snipping Tool (select a region to capture)
Press Win + PrtScn to save a full-screen screenshot to Pictures > Screenshots
Press Win + Ctrl + PrtScn to save a game window screenshot (if supported) to Videos > Captures
Use the Snipping Tool: Start menu > Snipping Tool > New > select the area > Save