Here you can learn more about How to enter the BIOS configuration. While you have display problems with main screen, you can check the display is a hardware or software issue by entering the BIOS configuration. However, if you experience a black screen on your PC after power on, please refer to How to fix computer cannot power on and shows black screen. If you encounter abnormal display issues on your ASUS computer, such as broken image, blurriness, artifacts, flickering, Graphics detection issues, or if the main screen does not display any image but the external monitor does, please refer to the following troubleshooting steps. Troubleshooting - Main (Internal) Display problem
