How to Save Windows Print Screen (PrtSc)
Its as easy as ABC. The key on your keyboard with the letters "PrtSc" (or "Print Screen") takes pictures of your entire screen. If you press Alt and PrtSc at the same time, it takes pictures of the currently active window that is open on your screen.
But none of these options saves the picture to file. Instead, the picture is saved in the Clipboard. You can Paste this picture into a Word document or any other application that allow images to be inserted which includes most graphics editing software.
In order to save the picture to file, press the Window key at the same time as PrtSc. This will take the picture of the active window and save it on your disk. This command will save the image of your screen to a folder called Screenshots in your pictures folder as a .png file. Normally, your Pictures folder and Screenshots will be at this location:
"UserName" is your user name on that specific computer