Stuck in Bios after changing to UEFI Boot Mode turning On the Secure Boot State.

Troubleshooting BIOS Boot Issues After Switching to UEFI Mode on ROG STRIX Z690-I GAMING WIFI

If you’ve recently attempted to switch your motherboard’s boot mode from Legacy BIOS to UEFI and encountered persistent issues, you’re not alone. Many users find themselves stuck in the BIOS screen after enabling Secure Boot and switching to UEFI mode, which can be frustrating. In this article, we’ll explore common causes of this problem and outline potential solutions to get your system booting correctly without unnecessary hassle.

Understanding the BIOS Boot Configuration

Your motherboard—the ROG STRIX Z690-I GAMING WIFI in this case—comes with flexible boot options to optimize system security and compatibility. Transitioning from Legacy BIOS to UEFI mode enables features like Secure Boot, which enhances security by preventing unauthorized bootloaders. However, switching modes involves specific system configuration steps, particularly concerning the drive’s partitioning scheme.

Common Challenges When Switching to UEFI

Many users experience difficulties because:

• The drive hosting the operating system is configured with an MBR partition scheme, which is incompatible with UEFI that requires GPT.

• Changing BIOS from Legacy to UEFI without converting the drive can cause the system to fail to boot, leading to being “stuck” in BIOS.

• Secure Boot, when enabled, may prevent the system from booting if the OS or drive configuration isn’t set up correctly.

Key Recommendations and Solutions

1. Verify Drive Partition Scheme:

Before switching to UEFI, ensure your SSD containing the OS uses the GPT partition style.

• To check:

• Use a working Windows environment, open Command Prompt as administrator, and run:

  bash
diskpart
list disk
select disk 0
detail disk

• Look for “Partition style”—it should say GPT.

• Convert OS Drive from MBR to GPT (if necessary):

Note: This process involves data risk. If you prefer avoidance, consider alternatives below.

• Backup all critical data.

• Use tools like Windows Disk Management or MBR2GPT utility (available in Windows 10 and later) to convert the disk:

• Using MBR2GPT:

  bash
mbr2gpt /convert /allowFullOS

• Follow the prompts carefully.

• Adjust BIOS Settings:

• After confirming that your drive is GPT, reboot and access BIOS.

• Set the boot mode to UEFI.

• Enable Secure Boot if