Take a screen capture (print screen)
You can take a picture of what is on your screen by pressing PRINT SCREEN (PRTSC or PRTSCN on some keyboards). This is called a screen capture. You can then paste the screen capture into a document, e‑mail message, or other file. There are two types of screen captures you can take: the entire screen, or just the active window. For example, if you have three programs open at the same time, you might want a screen capture of only the active window.
Some keyboards or mobile PCs that don't have the PRINT SCREEN button might use other keyboard combinations, such as FN+INSERT, to take a screen capture. Check the information that came with your computer or the manufacturer's website for more information.
To copy the entire screen
To copy only an active window
You can paste your screen capture into Paint, which is a drawing program you can use to crop, rotate, and resize pictures.
Open Paint by clicking the Start button , clicking All Programs, clicking Accessories, and then clicking Paint.
Click Edit, and then click Paste.