Windows 10: Windows fails to detect UEFI BIOS, assumes Legacy instead

Discus and support Windows fails to detect UEFI BIOS, assumes Legacy instead in Windows 10 Drivers and Hardware to solve the problem; Hi, Due to some string of events, my computer has quick boot enabled in BIOS. I need to load UEFI to change some things, and am unable to because... Discussion in 'Windows 10 Drivers and Hardware' started by Alexodd, Sep 16, 2020.

  1. ALEXODD
    Alexodd Win User

    Windows fails to detect UEFI BIOS, assumes Legacy instead


    Hi,


    Due to some string of events, my computer has quick boot enabled in BIOS. I need to load UEFI to change some things, and am unable to because this setting is enabled. I assumed there was a way to reboot into UEFI from inside Windows 10, so I looked up how and found the answer: There is an option in the "Advanced startup" menus to do this. Unfortunately, this option seems to be hidden if Windows 10 erroneously detects that you are using legacy BIOS instead of UEFI. This appears to be the case in my current install in MSINFO the BIOS Mode is set to Legacy.


    My questions are:

    • How do I change BIOS Mode to UEFI in my current install?
    • How do I make sure this remains the case in future OS resets/reformats?
    • Similarly, when building other computers in the future, how do I make sure Windows 10 does not make this same error?


    My questions are not:

    • How do I access my BIOS despite Windows 10 misidentifying my BIOS Mode?


    Thank you for your time,

    Alex

    :)
     
    Alexodd, Sep 16, 2020
    #1
  2. DAC81048
    dac81048 Win User

    Problem Regarding Bios Change from UEFI to Legacy

    I have hp pavilion p045tx with windows 10 pro. I recently install Ubuntu with windows 10 so for that I convert my bios setting from UEFI to Legacy mode for install third party software like wireless Driver and all in Ubuntu.
    But after every restart the bios setting change to default and that is to UEFI mode and that will cause an problem of no OS detect. Every time I have to go to bios setting and enable the legacy mode to start my OS. Can anyone suggest me what to do in this
    case.
     
    dac81048, Sep 16, 2020
    #2
  3. OLDNAVYGUY
    OldNavyGuy Win User
    UEFI / Legacy BIOS Mess and Windows Update

    @NavyLCDR suggested just that, and gave instructions on how to do it using Macrium.

    UEFI / Legacy BIOS Mess and Windows Update

    IMO, that is the best way forward for the OP.
     
    OldNavyGuy, Sep 16, 2020
    #3
  4. 72WESTY
    72westy Win User

    Windows fails to detect UEFI BIOS, assumes Legacy instead

    Legacy to UEFI

    I'm debating moving to UEFI form my now legacy BIOS (Award Software Int.) the mother board is a GA-Z68XP-UD3 rev1.0 on the the following link it shows a UEFI BIOS U1J )UEFI BIOS)

    GA-Z68XP-UD3 (rev. 1.0) | Motherboard - GIGABYTE Global

    Currently I'm running the legacy F10 BIOS. Does installing the UEFI BIOS automatically take care of everything to get to the UEFI BIOS? Installing the UEFI BIOS following the instructions using the Q-flash method GIGABYTE How to Reflash Motherboard BIOS

    What's steps do I take and in what order?

    Much appreciated
     
    72westy, Sep 16, 2020
    #4
Thema:

Windows fails to detect UEFI BIOS, assumes Legacy instead

Loading...

  1. Windows fails to detect UEFI BIOS, assumes Legacy instead - Similar Threads - fails detect UEFI

  2. Convert Legacy BIOS to UEFI

    in Windows 10 Gaming
    Convert Legacy BIOS to UEFI: I'm trying to follow the Microsoft article "Convert an existing Windows 10 Installation from Legacy Bios to UEFI".The first step is to boot to WinRE. When I click Troubleshoot>Advanced options I don't have an option for "Command Prompt". My only option is "Startup Settings".I...

  3. Convert Legacy BIOS to UEFI

    in Windows 10 Software and Apps
    Convert Legacy BIOS to UEFI: I'm trying to follow the Microsoft article "Convert an existing Windows 10 Installation from Legacy Bios to UEFI".The first step is to boot to WinRE. When I click Troubleshoot>Advanced options I don't have an option for "Command Prompt". My only option is "Startup Settings".I...

  4. Convert Legacy BIOS to UEFI

    in Windows 10 Installation and Upgrade
    Convert Legacy BIOS to UEFI: I'm trying to follow the Microsoft article "Convert an existing Windows 10 Installation from Legacy Bios to UEFI".The first step is to boot to WinRE. When I click Troubleshoot>Advanced options I don't have an option for "Command Prompt". My only option is "Startup Settings".I...

  5. Bios swap legacy to uefi

    in Windows 10 Installation and Upgrade
    Bios swap legacy to uefi: Motherboard/cpu upgraded ready for win 11. How to reinstall win 10 digital license to use new uefi bios. No facility for doing this. only gives option for retail licence install of win 10.trying to get system ready for win 11 but this is an obstacle to installation...

  6. Legacy To UEFI BIOS problem

    in Windows 10 BSOD Crashes and Debugging
    Legacy To UEFI BIOS problem: I have a DELL Optilex 990 so when I go to my bios I go to Boot Sequence then I switch to UEFI and the Boot Sequence is empty. When I boot up my Device it says no bootable devices found. How do I fix this. Please tell me the file path to Windows Boot Manager because I still...

  7. Changing from LEGACY BIOS to UEFI BIOS

    in Windows 10 Drivers and Hardware
    Changing from LEGACY BIOS to UEFI BIOS: Hello,First time posting here. I want to change from LEGACY to UEFI, I'm thinking:Will the computer be able to boot?I use it regularly, and I hope it works after this changover!I am not a computer geek. But I do know how to get into BIOS.Thanks...

  8. UEFI instead of BIOS

    in Windows 10 Ask Insider
    UEFI instead of BIOS: Hi guys. So recently i've been checking out my system components and my BIOS seems to be outdated. First of all i want to install UEFI instead of BIOS, and secondly, it says 'Outdated' next to the 'BIOS', which i believe is a bad thing? Even tho google tells me that i don't...

  9. BIOS mode as Legacy or UEFI?

    in Windows 10 Installation and Upgrade
    BIOS mode as Legacy or UEFI?: My Windows 10 says its BIOS mode is Legacy with C drive partition as MBR. Is it worth switching to UEFI mode with C drive as GPT partition? Why does it seem so difficult to install to UEFI mode with GPT partition? You do not get an option to choose when you install windows 10...

  10. EFI, UEFI, Legacy BIOS.......

    in Windows 10 Installation and Upgrade
    EFI, UEFI, Legacy BIOS.......: This weekend I will try to do a clean install of Win 10 again, from Win 7. Have to try som new methods to see if I can get my computer running flawlessly with Windows 10. I will use the clean install tutorials from this forum. I hav two options, with or without UEFI...