Change the setting back and boot into windows. Open the partition manager. There should be a partition that's called "EFI" on your boot drive. If it's not there you need to reinstall Windows because it was, like you said, in legacy mode. You can also, when installing windows 11 as a fresh install, disable all the "requirements" for windows 11. Answer from Rfreaky on reddit.com
Asus
asus.com › us › support › faq › 1051439
[Windows 11/10] Check for BIOS or Driver Updates | Official Support | ASUS USA
October 31, 2025 - Type and search [MyASUS] in the Windows search bar①, then click [Open]②. (The left image is from the Windows 11 search screen; the right is from the Windows 10 search screen.) Note: If you cannot find MyASUS, it may not be installed on your device. Refer to How to install MyASUS.
Asus
asus.com › us › support › faq › 1008276
How to update BIOS in Windows | Official Support | ASUS USA
3 weeks ago - Select [BIOS Update for Windows or BIOS Installer for Windows]④, then click [Update Selected Items]⑤. Note: If you do not see 「BIOS Update for Windows」 or 「BIOS Installer for Windows」, since some models may not support updating BIOS in Windows, please refer to How to use EZ Flash ...
Videos
08:08
Updating the BIOS on an ASUS Motherboard Running Win-11 - YouTube
07:18
How to Update ASUS Motherboard BIOS with EZ Flash 3.0 (Step-by-Step ...
03:12
How to Update BIOS Using ASUS Firmware Update or EZ Flash? | ASUS ...
02:03
How To Change Asus RAM Speed In BIOS (Windows 11) - YouTube
05:22
Update ASUS Motherboard BIOS with EZ Flash 3 Utility | How To - ...
ASUS
asus.com › support › faq › 1035492
[Windows 11/10] How to Use Windows Update to Update System and BIOS | Official Support | ASUS Global
March 20, 2026 - This article will guide you on how to use Windows Update to obtain the latest updates and the BIOS of your device. Note: If you receive a notification that your Windows version has reached the end of service, you can use the Windows 11 Installation Assistant to help upgrade your system to the latest supported version to continue receiving support.
YouTube
youtube.com › watch
ASUS BIOS Update to Install Windows 11 - YouTube
How to Update BIOS for ASUS Motherboard to Install Windows 11Help me 30 000 subscribes--------------#bth
Published October 30, 2025
Eleven Forum
elevenforum.com › windows support forums › diy builds and motherboards › asus
Updating BIOS for Windows 11 on ASUS Motherboard | Windows 11 Forum
January 13, 2024 - The previous BIOS (1903) didn't alter any BIOS code, it just applied the Windows 11 settings by default. Your BIOS should be set to UEFI, Secure Boot should be enabled, and the firmware TPM (trusted platform module) should be enabled. Unfortunately, Asus only provides a User's Manual for the Z390-A.
Reddit
reddit.com › r/techsupport › changing bios settings on asus to support windows 11
r/techsupport on Reddit: Changing BIOS Settings on ASUS to Support Windows 11
February 6, 2025 -
Hi all,
I have a Windows 10 PC that I upgraded last year with new hardware (mobo, cpu, gpu). With Windows 10 support coming to an end, I was looking to enable my system to support Windows 11. Currently I get a pop up from Windows saying my PC doesn't meet the requirements.
After some interwebs searches, I found I need to change my BIOS boot options from legacy to UEFI, to enable secure boot, and turn CSM off. I was able to do all those things. However, now when I boot up I go straight to BIOS and the OS doesn't seemingly get booted. Is the issue here that I installed the OS with the legacy boot mode? Will reinstalling the OS with these new BIOS settings fix the issue? Or is there another setting in the BIOS that should/could be changed to fix this issue?
Top answer 1 of 4
1
Making changes to your system BIOS settings or disk setup can cause you to lose data. Always test your data backups before making changes to your PC. For more information please see our FAQ thread: https://www.reddit.com/r/techsupport/comments/q2rns5/windows_11_faq_read_this_first/ I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.
2 of 4
1
Change the setting back and boot into windows. Open the partition manager. There should be a partition that's called "EFI" on your boot drive. If it's not there you need to reinstall Windows because it was, like you said, in legacy mode. You can also, when installing windows 11 as a fresh install, disable all the "requirements" for windows 11.
Reddit
reddit.com › r/windows11 › windows 11 automatically provided bios update (through windows update) for my asus rog strix laptop. wow...
r/Windows11 on Reddit: Windows 11 automatically provided bios update (through windows update) for my Asus rog Strix laptop. Wow...
July 2, 2021 - I think u need to disable uefi updates in bios settings. Maybe u need to do it again after installing windows 11. ... This isn't new. The same thing happened on Windows 10 with my ASUS TUF laptop at one point.
YouTube
youtube.com › watch
How to Update BIOS in Windows | ASUS SUPPORT - YouTube
In this video, we will show you some tips to update BIOS in Windows on ASUS LaptopsYou can also check the following link for more help.[Notebook/AIO] How to ...
Published April 29, 2024
ASUS
asus.com › microsite › motherboard › asus-motherboards-win11-ready
ASUS Motherboards Ready for Windows 11
ASUS motherboards are Windows 11 ready with great compatibility. Users can ensure having TPM 2.0 support for Windows 11 through latest BIOS update or manual activation.
Asus
asus.com › official support|asus usa › download center
Download Center | Official Support | ASUS USA
ASUS Support Center helps you to downloads Drivers, Manuals, Firmware, Software; find FAQ and Troubleshooting
Eleven Forum
elevenforum.com › windows support forums › diy builds and motherboards
Question about updating my ASUS BIOS. | Windows 11 Forum
March 22, 2024 - ASUS EZ Flash3 I pretty much agree with the post just above. Generally, I wait to flash the BIOS until the BIOS description lists a reason to do so. I never use a beta BIOS. I update the motherboard chipset drivers... every time a new non-Beta version is released.
Windows Report
windowsreport.com › windows 11 › how to › update your asus mainboard bios without risk (windows 10/11)
Update Your ASUS Mainboard BIOS Without Risk (Windows 10/11)
November 5, 2025 - In this guide, we’ll walk you through how to update the BIOS on your ASUS motherboard using Windows 10 or 11.
Windows Forum
windowsforum.com › forums › windows help and support forums › windows news
Asus Laptops Receive BIOS Update for Windows 11 24H2 Compatibility | Windows Forum
February 18, 2025 - This update is being provided as a Critical Update (CU) exclusively through Windows Update, ensuring a smoother, more automated transition. The BIOS update modifies the system’s underlying firmware, essentially addressing the compatibility ...
Asus
rog-forum.asus.com › t5 › intel-700-600-series › windows-11-no-longer-booting-following-bios-update › td-p › 915518
Windows 11 No Longer Booting Following Bios Update - Republic of Gamers Forum - 915518
March 7, 2024 - * I recently put my new system together. I installed Windows 11, the installation went perfectly, Windows booted fine all day and I was able to install all of my driver updates and whatnot. Finally I went to update my ASUS motherboard bios using the EZ Update option in the bios itself.
ASUS
asus.com › support › faq › 1046970
[Motherboard]How to install Windows 11？ | Official Support | ASUS Global
August 7, 2025 - 2. Please enable BIOS TPM item with below two methods to support Windows 11: ... Please download and update BIOS to the latest version from ASUS website.
ASUS
asus.com › sa-en › support › faq › 1008276
How to update BIOS in Windows | Official Support | ASUS Saudi Arabia
February 23, 2026 - In the MyASUS window, click [System Update]③. Note: If your device does not display the System Update tab, it means your device does not support this feature. You can use Method 2: Download and update BIOS via the ASUS support site. Learn more about Why can I only see the partial features ...
YouTube
youtube.com › watch
BIOS Update Tutorial für ASUS Mainboards (BIOS flashen step by step) - YouTube
Das BIOS (UEFI) Update am Beispiel eines ASUS Mainboards Schritt für Schritt erklärt. #bios #update #asus #mainboard #tpm #secureboot #ittweak -------------...
Published September 8, 2025
Asus
asus.com › us › support › faq › 1050375
[MiniPC] How to Update BIOS - ASUS EZ Flash 3 | Official Support | ASUS USA
March 20, 2026 - ASUS EZ Flash 3 program allows you to easily update the BIOS version, save BIOS file to USB flash drive. You can update the UEFI BIOS tool of the MiniPC device.
ASUS
asus.com › ca-en › support › faq › 1008276
How to update BIOS in Windows | Official Support | ASUS Canada
3 weeks ago - Select [BIOS Update for Windows or BIOS Installer for Windows]④, then click [Update Selected Items]⑤. Note: If you do not see 「BIOS Update for Windows」 or 「BIOS Installer for Windows」, since some models may not support updating BIOS in Windows, please refer to How to use EZ Flash ...
GawLab
gawlab.net › how-to-update-bios-asus-windows-11-p420
ASUS BIOS Update Windows 11: Step-by-Step Instructions - GawLab
March 31, 2025 - This method can be more convenient, but it’s also slightly riskier than using EZ Flash. 1. Download and Install ASUS Update: Download the ASUS Update utility from the ASUS support website for your motherboard model. Install the utility on your Windows 11 system.