To capture the complete screenshot press the Windows Key + PrintScreen > it will be saved to the Screenshots folder that is created in the Pictures folder.
Or use the Snipping Tool:
https://support.microsoft.com/en-au/help/13776/windows-use-snipping-tool-to-capture-screenshots
Capture part or all of your PC screen, add notes, save the snip, or email it right from the Snipping Tool window. You can capture any of the following types of snips:
etc.