PrtScr is a free tool which will allow you to capture the screen. See the features below

• Captures full screen, rectangle selection, freehand selection, or active window
• Can capture mouse cursor
• Supports multiple monitors
• Allows annotation over capture, with smooth, natural mouse drawing
• Saves capture straight to desktop or to any file, sends it as email, edits, prints or sends to clipboard
• Exports as JPG, BMP, or PNG (transparent or opaque)
• Can re-scale capture before exporting
• Can pre-fill capture title & comments with window title & browser URL

You can download and read more here