How to Solve a Black Screen with a White Line on Boot with an Asus UEFI BIOS


What could be the cause and solution for a booting issue that displays a black screen with a white line near the top left corner? >
> I have an Asus UEFI BIOS and I noticed that whenever I boot my PC after a long period of inactivity, the first boot always fails and shows a black screen with a white line. However, if I force shut down the PC with the power button and try booting again, it works fine on the second attempt. Is this a sign of a hardware or software problem? How can I fix it?


How to Fix a Black Screen with a White Line on Boot

If you have ever encountered a black screen with a white line near the top left corner when you try to boot your PC, you might be wondering what is causing this issue and how to solve it. This article will explain some possible causes and solutions for this booting problem.

There are several factors that could lead to a black screen with a white line on boot, such as:

  • Corrupted or outdated drivers: Drivers are software components that enable your hardware devices to communicate with your operating system. If your drivers are corrupted or outdated, they might prevent your PC from booting properly or cause conflicts with other devices.
  • Malware infection: Malware is malicious software that can harm your PC or steal your data. Some malware can modify your boot settings or infect your boot sector, which is the part of your hard drive that contains the information needed to start your PC.
  • Hardware failure: Hardware failure is when a physical component of your PC stops working or becomes damaged. This could affect your hard drive, your memory, your motherboard, your power supply, or any other part of your PC. Hardware failure can cause your PC to fail to boot or display a black screen with a white line or other errors.
  • BIOS settings: BIOS stands for Basic Input/Output System, and it is the firmware that controls the basic functions of your PC, such as boot order, date and time, and hardware configuration. If your BIOS settings are incorrect or incompatible with your hardware or operating system, your PC might not boot or show a black screen with a white line.
  • Possible Solutions

    Depending on the cause of your booting issue, there are different solutions that you can try, such as:

  • Update or reinstall your drivers: Updating or reinstalling your drivers can fix any corruption or compatibility issues that might prevent your PC from booting. You can use the Device Manager to check for any driver updates or errors, or you can use a third-party tool to automatically update or reinstall your drivers.
  • Scan and remove any malware: Scanning and removing any malware can restore your boot settings and your boot sector to their original state. You can use the Windows Security app or a trusted antivirus software to scan your PC for any malware and remove it. You can also use the Windows Recovery Environment to access advanced options such as System Restore, Startup Repair, or Command Prompt, where you can perform further troubleshooting or recovery actions.
  • Check and replace any faulty hardware: Checking and replacing any faulty hardware can resolve any physical damage or malfunction that might cause your PC to fail to boot or display a black screen with a white line. You can use the Windows Memory Diagnostic tool to test your memory for any errors, or you can use a hardware diagnostic tool to test your other components. You can also open your PC case and inspect your hardware for any signs of wear or damage, such as loose connections, broken wires, or burnt parts. If you find any faulty hardware, you should replace it with a compatible one or contact a professional for assistance.
  • Reset or update your BIOS settings: Resetting or updating your BIOS settings can fix any incorrect or incompatible settings that might prevent your PC from booting. You can access your BIOS settings by pressing a specific key (such as F2, F10, or Del) when you turn on your PC, before the Windows logo appears. You can then reset your BIOS settings to their default values, or update your BIOS firmware to the latest version, if available. You should be careful when changing your BIOS settings, as making a wrong change can cause your PC to become unbootable or unstable.
  • Conclusion


black screen with a white line on boot is a common booting issue that can have various causes and solutions. By following the steps above, you might be able to fix this issue and restore your PC to normal. However, if none of the solutions work, or if you are unsure about how to perform them, you should seek professional help or contact your PC manufacturer for support.

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