Hardware⏱️ 3 min read

How to Fix: Windows 11 problem

Windows 11 stuck in BIOS with ASUS TUF A520M-PLUS II motherboard, CSM issues and blank boot priority list or black screen loop.

The issue you're experiencing, where Windows 11 boots into a blank BIOS screen or loops into a black screen when turning CSM (Compatibility Support Module) on, is a common problem known as 'BIOS Boot Loop' or 'Bootloader Loop.' This occurs when the system fails to detect the operating system and enters a loop to try and boot from the first device listed in the BIOS settings. In your case, it's likely due to an issue with the UEFI firmware of your motherboard or a problem with your storage devices.

⚠️ Common Causes

  • The UEFI firmware of your motherboard may be corrupted or outdated.
  • A problem with the storage devices, such as a faulty NVMe drive or an incorrect boot order setting.
  • A conflict between the CSM and UEFI firmware settings.

🛠️ Step-by-Step Verified Fixes

Method 1: Disable CSM and Use UEFI Boot Mode

  1. Step 1: Enter the BIOS settings by pressing the key indicated in your motherboard manual (usually F2, F12, or Del). Ensure that CSM is disabled.
  2. Step 2: Set the boot order to prioritize the UEFI drive (Hitachi NVMe) and ensure it's set as the first device in the list. Save changes and exit the BIOS settings.

Method 2: Update UEFI Firmware

  1. Step 1: Download the latest UEFI firmware update from the motherboard manufacturer's website.
  2. Step 2: Follow the instructions provided in the firmware update guide to update the UEFI firmware. This may involve flashing the firmware using a tool like ASUS's UEFI Update Utility or a third-party tool like Rufus.

💡 Conclusion

To avoid data loss, ensure that you have backed up your important files and data before attempting any fixes. If the issue persists after trying these steps, it may be worth seeking further assistance from a professional or contacting the motherboard manufacturer's support team for additional guidance.

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