Both speakers died? Go into system preferences and go into sound. Then select the output tab. Take a screenshot. How to take a screenshot of a selected portion of your screen Press Shift-Command-4. ... Move the crosshair to where you want to start the screenshot, then drag to select an area. ... When you've selected the area you want, release your mouse or trackpad button. ... Find the screenshot as a .png file on your desktop. Then add it to ur question.