They are both the same monitor model, U2515H. Both of them should be reset to Factory using the Menu OSD -Others -Factory Reset. But even then, the colors may not match and still be within manufacturer specifications. All Dell monitor panels are uniquely calibrated at the factory to their own unique panel. No two panels are identical, even of Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. Check for bent or broken pins in the video cable connector. Intermittent charging when using USB Type-C connection to the computer, laptop, and so on. Check if the maximum power consumption device is over 65 W. Leave the monitor on for at least 15-20 minutes to let it heat up. Make sure that the screen resolution is at its optimal setting. If you have an LCD monitor, push the screen resolution to the highest allowed number, also known as “native resolution”. Make sure that your video card is outputting in highest bit mode. Open System Preferences and click the Displays icon. If you have multiple monitors, a separate window will appear on each. Click the Color tab and you’ll see a number of color profiles. If you Try a different color preset setting in the Color Settings On-Screen Display Menu (OSD). Adjust the R, G, B value in the Color Settings OSD, if Color Management is turned off. Change the input color format to personal computer RGB or YPbPr in the Color Settings On-Screen Display Menu (OSD). Run the built-in diagnostics. 3. 1,515. Apr 27, 2023. #1. Ok, here's the situation. I got two new monitors (KOORUI 27 Inch Computer Monitor, QHD 2560P Gaming Monitor 144Hz) the first one came in and I plugged it up and everything looks fine. The second one came and plugged it in and it works but the screen has what appears to be a darker SLIGHTLY greenish hue to it. Try connecting a different monitor to the PC to further narrow down what the problem is with the monitor itself. Another thing you can do is completely disconnect the monitor from the PC and turn it on and see if it is still giving you weird colors/lines on the splash screen. October 12th, 2018 06:00. Blinking solid colors usually indicate an issue with the graphic ( video) card. If you haven't done so yet, power off system, remove power cord from wall socket or power strip surge protector, and wait about 5 minutes. Replace power cord into wall socket, power on system, hopefully computer display works normally. Adjust the individual RGB color settings to get the monitors to match. Go to “Custom Color” on the monitor On Screen Display (OSD) (Figure 1). Figure 1 ; Go to the individual RGB option and adjust the colors. The following settings are a general guideline (Figure 2). Figure 2 Lower the Blue option to about 95 on all three displays. First, properly shut down your PC. Next, power off the monitor using the dedicated button. Then, unplug both the data and power cables. Wait for about 30 seconds before re-establishing the connection. Finally, power on your monitor and also start the PC. The display should now stop going black randomly. XI6uU.