I always feel like it's a good idea to continue to learn even if it's such a minor thing as taking a fast screen shot. The benefit of this method is it allows you to screen capture just what you need to and automatically adds it to the clipboard for pasting.
Simply press the key combo [Windows key + Shift + S] click and drag your mouse over the desired area and you're done.
Simply press the key combo [Windows key + Shift + S] click and drag your mouse over the desired area and you're done.