It may be necessary to degauss a monitor to improve the color around the edges of the screen. This kind of discoloration is caused by magnetic interference around the monitor.
Most monitors will degauss automatically when turned on so as a first option, power off and then on your monitor. If the discoloration does not improve, continue to the next step.
Note: Degaussing makes a twang sound and is often followed by a short click sound. If you don't hear these sounds, the monitor probably does not automatically degauss when powered on.In the rare case the monitor does not automatically degauss, locate the degauss button on the front of the monitor. The button will most likely be accompanied by a picture similar to a horseshoe.
Some monitors do not have a single button but instead require the simultaneous pressing of multiple buttons, such as the brightness and contrast buttons.
Often times the degauss option will be buried in the on-screen menu options. Scroll through these options to locate the degauss option or consult the monitor's manual for more information.
