No picture is displayed

Check to make sure the monitor cable is firmly connected to the video adapter

Double-check that the computer has power and it is turned on

Check the monitor brightness controls to make sure it’s turned all the way up

Check the input settings on the monitor. It may support DVI, Vga, or HDMI inputs and it may be set to an input that you aren’t currently utilizing

The screen is not in sync

Check the monitor cable for a firm connection with your video adapter

Check the monitor’s screen refresh rate in the display settings section of the control panel

Check the display resolution in the adapter settings and make sure it isn’t set to a resolution that is too high for the monitor to display properly

The Screen position isn’t centered

Make adjustments to the horizontal and/or vertical position controls on the monitor to center the display image

Check the monitor refresh rate in the adapter settings and make sure it’s set properly for your particular monitor

The screen is too dark or too bright

Check the monitor’s brightness and contrast controls. And make sure they are set too high or at the minimum

The screen shakes or appears distorted

Check for any objects that may emit magnetic fields, such as uninterruptible power supplies or power adapters, and position them a greater distance away from the monitor

Check the monitor refresh rate in the adapter settings in the display settings area of the control panel and make any needed adjustments to match your monitor’s specifications