To run an LCD built-in self-test, turn off the computer and disconnect any external devices. Plug in the charger and make sure the computer screen is clean and free of dust particles. Press and hold the “D” key while turning on the computer to enter the LCD built-in self-test mode. Continue to hold the “D” key until you see solid colors on the screen.
The display will switch between black, white, red, green, and blue. Carefully inspect the screen for any abnormalities. If no abnormalities are present during the test, the display is functioning correctly. If an issue is detected, contact us through our support website. Press the “Escape” key to exit the test when finished.
