The monitor you see in this picture has an HDMI cable plugged in on the right; the power cable is located on the left in this picture. In this example, the monitor uses a three-pronged port, but not all monitors are identical; some, for example, have a much smaller, circular port. If you have trouble identifying the power cable and its port, consider that there are probably only two cables plugged in to your monitor: the power and video cables. A process of elimination should help determine the power cable. Some older styles of monitors have power cables that are “hard-wired” directly to the monitor. These cables don’t typically come loose. If you suspect an issue with this type of power connection, keep your personal safety in mind and don’t service the monitor yourself; replace it or seek help from a computer repair service. Make sure the power cable is securely plugged in. If your power cable is instead plugged into a surge protector, UPS, etc., ensure that particular device is securely plugged into the wall outlet. If you’re using one of these devices, there’s an extra step you need to verify: that the surge protector or UPS is also switched on.
