As it does in all versions of Windows, pressing the <PrtScn> key
copies the entire display to the clipboard. Pressing <ALT>+<PrtScn>
copies only the active Window to the clipboard. To view the screen
capture, open a graphics program, such as MS Paint, and press
<CTRL>+V. This will paste the contents of the clipboard (your
screenshot) into the open file, and allow you to view it or save it as
a file for later use.