Computer can’t load in windows uefi mode or use secure boot

Troubleshooting Secure Boot and UEFI Mode Issues on Windows 10 with ASUS Motherboards

If you’re experiencing problems enabling Secure Boot or switching your system to UEFI mode on Windows 10, you’re not alone. Many users have encountered similar challenges, especially when attempting to optimize their system’s security settings or prepare for certain games and applications that require Secure Boot.

Understanding the Context

Secure Boot is a security feature designed to prevent unauthorized firmware, operating systems, or bootloaders from loading during the system startup process. Enabling Secure Boot often requires your system to be configured in UEFI mode, as opposed to Legacy BIOS mode. While this process can enhance your system’s security, it sometimes leads to complications, including boot errors or difficulties entering UEFI settings.

Common Scenario: Gaming and Secure Boot

A prevalent scenario involves gamers trying to activate Secure Boot to run certain titles or features, such as Battlefield. Users often follow official instructions meticulously, switching their BIOS settings to enable UEFI mode and activate Secure Boot. However, instead of a seamless transition, they encounter issues like the system entering a “Repairing Disk” routine or repeatedly reverting to BIOS settings without completing the configuration.

Typical User Experience

Attempting to enable Secure Boot on a Windows 10 system with an ASUS motherboard.
Following step-by-step guides to change BIOS settings from Legacy to UEFI mode.
Encountering prolonged “Repairing Disk” messages or error prompts.
Being unable to save or apply BIOS changes, or facing repeated reversion to previous settings.

Possible Causes and Solutions

Compatibility and Firmware Settings

Ensure your motherboard’s firmware (BIOS/UEFI) is updated. Manufacturers often release updates that improve UEFI support and Secure Boot functionality.

Windows Installation Mode

Transitioning from Legacy BIOS to UEFI mode may require a clean installation of Windows or conversion of the existing system partition to GPT format. Converting between MBR and GPT without proper preparation can cause boot issues.

Secure Boot Keys and Configuration

Verify that Secure Boot keys are correctly configured. Some ASUS motherboards have specific menus or options for managing keys, required for Secure Boot to function properly.