If your monitor is not showing an image, first check that the monitor is powered on by pressing the power button, usually in the bottom right of the monitor, or on the bottom. Also, make sure that your power cord is fully plugged in, sometimes they can come loose and the monitor will not power on.
Next check that the cables are fully connected to the back of the monitor with the screws all the way tight, as well as on the back of the pc. You will either see a blue VGA cord or a white DVI or an HDMI cable.
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