Clearing Up Color Issues in Legacy BIOS

Clearing Up Color Issues in Legacy BIOS

Joseph Lv12
  2024-08-15 15:10:37 2024-08-15 15:10:37 Created   2024-08-16 15:10:37 2024-08-16 15:10:37 Updated    

Clearing Up Color Issues in Legacy BIOS

Newer computers come with Unified Extensible Firmware Interface (UEFI) as the new standard. However, Legacy BIOS is still largely part of most active systems due to legacy software and hardware support. Switching from UEFI to Legacy BIOS is easy using the firmware utility. But what if the legacy boot option is grayed out in BIOS?

This can happen for a few reasons. A common reason for the grayed-out BIOS is if you have Secure Boot or Platform Trusted Technology (TPM) enabled. Issues with Modern Standby supported system is another reason that prevents you from switching from UEFI to Legacy BIOS.

Here is how to fix the Legacy Boot grayed-out in BIOS issue on your Windows system.

What Causes the Legacy Boot Grayed Out Problem?

You may find the Legacy Boot option grayed out if the UEFI settings, such as Secure Boot and TPM are enabled in the BIOS utility. In some instances, the BIOS utility can tell you why you can’t switch to the Legacy boot option.

Boot into your BIOS utility and openAdvanced Boot Options . Next, check theEnable Legacy Option ROMs option. You may see an error prompt explaining why the Legacy option cannot be enabled. It usually hints that PPT/TPM or Secure Boot is enabled.

If you don’t have any such option, try the troubleshooting steps below to restore the Legacy boot option in BIOS.

OtsAV TV Webcaster

1. Disable Secure Boot to Enable Boot

Secure Boot is a UEFI feature that protects your computer against malware by allowing only trusted system software to run on your computer. When enabled, it will perform a cryptographic check during the boot process to verify the integrity of the system image.

However, if you have Secure Boot enabled, it will likely disable Legacy Boot as well. You’ll need to disable Secure Boot in your BIOS utility to fix the issue.

The below steps to disable Secure Boot are for an HP Pavilion computer. For other systems, refer to your system manual.

To disable secure boot:

  1. Click onStart and then click onPower .

  2. Press and hold theShift key and click onRestart . Confirm the action if necessary.

  3. Release theShift key as the PC shuts down and boot into theRecovery Menu.

  4. Go toTroubleshoot and click onAdvanced options .

  5. Next, click onUEFI Firmware Settings.
    Advanced OptionspUEFI Firmware Settings

  6. ClickRestart to boot into theStartup Menu.
    startup menu HP

  7. In the Startup Menu, pressF10 to access theBIOS Settings . You may see other options depending on your computer manufacturer.

  8. Use the right and left arrow keys to open theBoot Options tab in the BIOS Utility.

  9. Next, use the up and down arrow key to highlight theSecure Boot option and pressEnter to view more options.
    disable secure boot bios

  10. SelectDisabled and make sure the changes are shown in the Boot Options tab.

  11. PressF10 to save the changes and disable Secure Boot.

vMix HD - Software based live production. vMix HD includes everything in vMix Basic HD plus 1000 inputs, Video List, 4 Overlay Channels, and 1 vMix Call
This bundle includes Studio 200 for vMix from Virtualsetworks, HTTP Matrix 1.0 automation scheduler, and 4 introductory training videos from the Udemy vMix Basic to Amazing course.

2. Disable Trusted Platform Technology (TPM)

disable TPM state BIOS

The Tube Sites Submitter is a fast and efficient tool for anyone who needs to upload videos quickly, easily and automatically to hundreds of tube sites in mere minutes .

In addition to Secure Boot, you may also have enabled Trusted Platform Module (TPM), disabling Legacy BIOS. To fix the issue, check if TPM is enabled on your PC, which is likely a case on a Windows 11 running system, and disable the option if necessary.

You can disable TPM from the BIOS setup utility. Here’s how to do it.

  1. Boot into your BIOS utility using theWindows Recovery Menu.
  2. Next, open theSecurity tab using the right and left arrow keys.
  3. Highlight theTPM State option and pressEnter . If no TPM option is available, look for thePTT option.
  4. SelectDisabled to disable TPM on your device.
  5. PressF10 to save the change and exit.

3. Disable Modern Standby

Modern Standby (S0) is a newer power mode available on select modern computers. It is enabled by default on compatible systems but can cause issues with Legacy Boot.

To fix the issue, try to disable Modern Standby on your Windows computer . Once disabled, restart your PC to see if you can switch to Legacy Boot now.


DbSchema database designer for all databases, schema design in the team, schema deployment, interactive diagrams, documentation, data and query tools.

Restore a Grayed Out Legacy Boot Option in Your BIOS

You can fix the grayed-out Legacy boot option in BIOS by disabling Secure Boot and Trusted Platform Technology. In addition, disable Standard Standby (S0) to fix the problem.

  • Title: Clearing Up Color Issues in Legacy BIOS
  • Author: Joseph
  • Created at : 2024-08-15 15:10:37
  • Updated at : 2024-08-16 15:10:37
  • Link: https://windows11.techidaily.com/clearing-up-color-issues-in-legacy-bios/
  • License: This work is licensed under CC BY-NC-SA 4.0.
On this page
Clearing Up Color Issues in Legacy BIOS
  1. Clearing Up Color Issues in Legacy BIOS
  2. What Causes the Legacy Boot Grayed Out Problem?
  3. 1. Disable Secure Boot to Enable Boot
  4. 2. Disable Trusted Platform Technology (TPM)
  5. 3. Disable Modern Standby
  6. Restore a Grayed Out Legacy Boot Option in Your BIOS