Windows 8 and 8.1 Forums


Windows 8.1 to Windows 7 Pro

  1. #1


    Posts : 7
    Windows 8.1

    Windows 8.1 to Windows 7 Pro


    Hello, I'm having an issue downgrading from windows 8.1 to windows 7. I bought an ASUS ROG G20AJ in and the computer came with windows 8.1 pre-installed, but I want to switch to windows 7 because some software I need is not compatible with windows 8/8.1. I already set up a USB flash drive with Windows 7 Pro and the download works fine until it boots up Windows 7, I'll post a picture of what I'm receiving,
    Click image for larger version

    I've tried updating my UEFI BIOS, disabling secure boot and enabling legacy.

    I also read online that you have to run the UEFI version of the formatted flash drive, but when I select it my BIOS just opens up.

    Thanks for reading, does anyone know what I can do?

      My System SpecsSystem Spec

  2. #2


    Windows 8 machine can not ALL be simply downgraded to Windows 7. I checked the ASUS site from your link and they list no Windows 7 drivers for your machine. Installing Win7 is going to then force you to search for all the drivers needed -- on your own!
      My System SpecsSystem Spec

  3. #3


    Posts : 123
    Win8.1


    Are you installing Win7 x64?
    One of the common issues is that users try to install X86 version with UEFI enabled in the bios. X86 does not support UEFI so you would have to configure the machine for Legacy boot to install X86 versions of Windows. If you do try to install X86 version setup will run but on the 1
    st
    reboot you will get BIOS error similar to “No bootable devices –Strike F1 to retry boot, F2 for setup utility. Press F5 to run onboard diagnostics”
      My System SpecsSystem Spec

  4. #4


    Posts : 7
    Windows 8.1


    Quote Originally Posted by Mark Phelps View Post
    Windows 8 machine can not ALL be simply downgraded to Windows 7. I checked the ASUS site from your link and they list no Windows 7 drivers for your machine. Installing Win7 is going to then force you to search for all the drivers needed -- on your own!
    Okay so I can download windows 7 but I'll need to find and install all drivers on my own?

    If this is the case why is my BIOS not allowing me to switch operating systems?
      My System SpecsSystem Spec

  5. #5


    Posts : 7
    Windows 8.1


    Quote Originally Posted by CountryBumkin View Post
    Are you installing Win7 x64?
    One of the common issues is that users try to install X86 version with UEFI enabled in the bios. X86 does not support UEFI so you would have to configure the machine for Legacy boot to install X86 versions of Windows. If you do try to install X86 version setup will run but on the 1
    st
    reboot you will get BIOS error similar to “No bootable devices –Strike F1 to retry boot, F2 for setup utility. Press F5 to run onboard diagnostics”
    I am positive that I am installing the 64 bit version of windows 7.
      My System SpecsSystem Spec

  6. #6


    Good tutorial on how to do this here: Downgrade Windows 8 to Windows 7
      My System SpecsSystem Spec

  7. #7


    Posts : 7
    Windows 8.1


    Quote Originally Posted by Ztruker View Post
    Good tutorial on how to do this here: Downgrade Windows 8 to Windows 7
    I followed that tutorial already. The issue still persists.
      My System SpecsSystem Spec

  8. #8


    Are you installing in UEFI/GPT mode or BIOS/MBR mode? If UEFI:

    To install Windows 7 on a UEFI (not BIOS) system, do the following:

    1) DISABLE Secure Boot.
    2) Boot the Windows 7 x64 DVD in UEFI mode.
    3) Delete all partitions & than use Drive Options>NEW to make the UEFI Partitions.
    4) screenshots in UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with

    Posted by theog here: Sevenforums.com
      My System SpecsSystem Spec

  9. #9


    Posts : 7
    Windows 8.1


    Quote Originally Posted by Ztruker View Post
    Are you installing in UEFI/GPT mode or BIOS/MBR mode? If UEFI:

    To install Windows 7 on a UEFI (not BIOS) system, do the following:

    1) DISABLE Secure Boot.
    2) Boot the Windows 7 x64 DVD in UEFI mode.
    3) Delete all partitions & than use Drive Options>NEW to make the UEFI Partitions.
    4) screenshots in UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with

    Posted by theog here: Sevenforums.com
    I am using UEFI, but whenever I boot from the USB flash drive in UEFI mode the UEFI BIOS will just restart and nothing happens.
      My System SpecsSystem Spec

  10. #10


    So you are following these instructions then, including disabling Secure Boot?

    UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with
      My System SpecsSystem Spec

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