I'm having problems with my monitor, what do I do?
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Overview:
Basic monitor troubleshooting steps for monitors
Steps:
Make sure the monitor has power and the power light comes on when the power button is pressed. If the light on the monitor remains off, the monitor is not receiving power from either the wall outlet or the power adapter.
If you have a flat panel LCD monitor, unplug the monitor power cable, wait about 30 seconds, reconnect the cable and then turn on the monitor. This resets the electronics on the monitor.
Check the video cable connection and power cord on the back of the computer and on the monitor. Make sure that it is connected properly, and the connecting screws are tight. Turn the monitor off and then back on again (while the computer is on) to see if an image is displayed.
Disconnect/reconnect video cable. Especially if the monitor is connected into a Display Port.
Connect the monitor to a different power outlet.
Connect the monitor to a different video output port.