If you want to take a screenshot of only one monitor, there are a few different ways to go about it. The easiest way is to use the Windows key + PrtScn button combination. This will take a screenshot of the entire screen, including any open windows. If you just want to capture the contents of one window, you can use the Snipping Tool in Windows 10 or 8.1. This will allow you to select which window you want to capture, and then save the image to your computer. ..