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 at 3:07 PM.

  1. 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

    :)
     
  2. 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.
     
  3. 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.
     
  4. 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
     
Thema:

Windows fails to detect UEFI BIOS, assumes Legacy instead

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