Change the color-setting mode in the Color Settings On-Screen Display Menu (OSD) to Graphics or Video, depending on the application.

Dim/discolored video can be caused by the video cable, so try reseating the cable and swapping with a known good part. Use the buttons at the bottom of the monitor to access the On-Screen Display (OSD) menu of the monitor. Use a USB-extender cable to position the wireless USB receiver as far away as possible from the USB 3. No POST - Your computer is not showing any indication of activity, the screen might be blank and will not display the Dell logo during start-up. Your Dell P2418HT monitor has a built-in diagnostic tool that helps to determine if the screen abnormality you are experiencing is a problem with the monitor or with the video card on your computer.No Video - You are unable to see any display on the screen, able to hear the windows chime but no display is seen.

Your Dell P2418HT Monitor provides a self-test feature that allows you to check whether the monitor is functioning properly. If you notice any abnormalities during Built-In Diagnostics, you may get the monitor repaired/replaced if it is under warranty by contacting Dell Technical Support. How to Use and Troubleshoot the Dell P2418HT Monitor Learn how to use and troubleshoot the Dell P2418HT monitor.Perform monitor self-test feature check to determine if the scrambled screen appears in self-test mode.

Handle your monitor with care as a darker-colored monitor may get scratched and show white scuff marks more than a lighter- colored monitor. Note: If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly.Alternatively, you can also refer to the Setting Up The Monitor in the User's Guide for your Dell P2418HT monitor. For more information on Using the On-Screen Display (OSD) Menu, refer to the Operating Your Monitor section in the User's Guide for Dell SE2717H/SE2717HX monitor.

To ensure proper Self-Test operation, remove the video cables (VGA, DVI, HDMI or DisplayPort) from the back of the computer. Unplug and replug the power cable from the power adapter to allow auto‑recalibration of the touch module.

Some USB devices like external portable HDD require higher electric current; connect the device directly to the computer. Turn off your monitor and reconnect the video cable: then turn on both your computer and the monitor. If your monitor screen remains blank after you use the previous procedure, check your video card (GPU) and computer, because your monitor is functioning properly. Make sure that the video cable connecting the monitor to the computer is connected properly and is secure. If the display cannot be detected by the computer, power off/on the monitor or unplug and replug the USB cable.