A misaligned or flickering Dell monitor can prove to be a real problem, especially if you are required to work on a computer for long periods of time throughout the day. Dell manufactures many different models of monitors, which are often packaged along with a Dell computer system. While the newer LCD monitors don't produce flickering, older CRT monitors may display screen flickering due to outside interference, bad connections or refresh rate settings.
Basic Monitor Adjustment
All Dell monitors provide basic adjustment options that allow you to change your screen's alignment, color, brightness and contrast. Look for menu buttons along the bottom front or side of the monitor frame. Depending on the model of Dell monitor you use, the number and labeling on the buttons will appear different. An on-screen menu will appear and provide adjustment options to correct such common issues as displays that are too wide or narrow, displays that are skewed to one side or displays that do not display color correctly.
Basic Monitor Troubleshooting
Flickering monitor issues can be caused by loose connections or faulty cables. Before attempting any other troubleshooting, check that the Dell monitor cable is securely attached to the video input on the back of the computer and to the video output on the back of the monitor. Most monitor cables require you to use two small thumb screws to ensure the cable is snugly attached. If you have another cable on hand, try switching to a new cable to determine if the cable you were using is defective.
Adjust Refresh Rate
The Windows operating system allows you to adjust the refresh rate of your monitor to reduce flickering issues. CRT monitors should have a refresh rate of at least 75 hertz to improve the display and reduce eye strain. Click the "Start" button, type "Adjust Screen Resolution" in the search bar and press the "Enter" key to launch the screen resolution window. Click "Advanced Settings" and navigate to the "Monitor" tab. Here you can change the refresh rate for your monitor.
Remove Outside Interference
Outside interference, such as devices that produce radio frequencies or magnetic fields, can also cause flickering and display issues. Move electrical devices, including your computer speakers and surge protectors, away from the monitor to improve the display. Also remove anything that broadcasts on radio frequencies, such as radios, baby monitors or CBs. Also place enough space between your Dell monitor and other monitors to prevent flickering.