All Programs at the bottom: Now click on Accessories , and Paint : When Paint starts up, click the Paste button at the top: The image you captured on the desktop should now appear in the main viewing area. If it doesn't, it means you haven't captured the image. So try pressing your "Prt Scrn" button again. You now need isolate just that part of the image you're interested in. After all, there's no sense in sending anyone the whole of the screen when you only want to capture the error message. To isolate just part of the screen, click the Select button on the Paint toolbar: Now move your mouse back on to your image. The cursor should have changed shape. Hold down your left mouse button on the top left of whatever it is you're trying to capture. Keep your left mouse button held down and drag to the bottom right. In the image below, we're trying to isolate some code and the error message: Unfortunately, Paint is not very good when it comes to resizing a selected area. You might think the white squares are sizing handles. But if you hold your mouse over one and try to drag to a new position it will cut and move the image instead. It's better if you press the Select button again. This will deselect your chosen area, and you can have another go. If you accidentally move your selected area, click the Undo icon at the very top