![]() ![]() Press the N key to enter LCD-integrated self-test mode when you see the message Do you see the color bars? Yes/No.The preboot computer assessment runs a series of tests on the computer.Use the arrow keys on the keyboard and select Diagnostics, and press the Enter key. ![]() Turn on the computer and tap the F12 key several times until the One Time Boot Menu appears. Uninstall chipset and display driver (Intel Display driver and Nvidia or AMD Display driver when device has double GPU).Carefully inspect the screen for abnormalities.If your memory is damaged, this can cause system instability and blue-screens. It tests your memory to ensure everything is working properly. The screen changes colors to black, white, red, green, and blue. The Memory Diagnostics tool built into Windows can also help.Continue to hold the D key until you see the entire screen change colors. Press and hold the D key and turn on the computer to enter the LCD built-in self-test (BIST) mode.This kind of startup is known as a 'clean boot.' A clean boot helps eliminate software conflicts. To help troubleshoot error messages and other issues, you can start Windows by using a minimal set of drivers and startup programs. Ensure that the LCD screen is clean (no dust particles are on the surface of the screen). Windows Startup Settings (including safe mode) Step 2: Perform clean boot to avoid any third party software conflict.Disconnect any devices that are connected to the computer, and connect the AC Adapter (charger).When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry images, horizontal or vertical lines, color fade, running a diagnostic test on the LCD helps identify if the issue is with the LCD panel. Dell laptops have integrated diagnostic tools that can determine if the screen abnormality is an inherent problem with the LCD screen of the Dell laptop or with the video card (GPU) and computer settings. My iPad Screen Is a Fuzzy Green, Red, or Blue GA S REGULAR Menu Lifewire Tech for Humans Newsletter Search Close GO Computers, Laptops & Tablets > Apple 58. ![]()
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