Windows 8 and 8.1 Forums

UEFI settings for ASUS z77 prior to Clean install

  1. #1

    Posts : 2
    windows 8.1

    UEFI settings for ASUS z77 prior to Clean install

    Nob question for you experts. After reading many threads about this UEFI stuff, i'm confused. I have a Asus Sabertooth z77 motherboard and will be fresh installing windows 8.1 full to Samsung 250gb ssd. I'm not quite getting what i'm supposed to configure on the MB for UEFI boot prior to installing the windows 8.1. Anyone please explain step by step as to what needs to done in the bios before I install windows please. Oh and I will be using the DVD disk to install.

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  2. #2

    Posts : 879
    Windows 10

    Tip   Tip
    If you are installing Windows 7/8/10 from a USB flash drive in UEFI Boot Mode, then you need to have a UEFI Boot Mode compatible Windows 7/8/10 USB flash drive.

    Here is more info: UEFI Boot Mode (installing using the GPT partition style) and Legacy BIOS Boot Mode (installing using the MBR partition style). -> link

    Asus motherboard with UEFI firmware. How to install Windows 7/8/10 64-bit in UEFI Boot Mode.

    You do not need to change the default UEFI firmware (BIOS) settings.

    Note: You need to select to boot from the UEFI type (marked UEFI in the boot menu) if you want to install Windows 7/8/10 64-bit in UEFI Boot Mode (see screenshot below).

    Note: You do not need to change the boot order of drives in your UEFI firmware settings.
    - Connect your Windows 7/8/10 64-bit USB flash drive (Note: FAT32 file system) or insert your Windows 7/8/10 64-bit DVD.
    - Restart the computer.
    - Press the correct key to enter the boot menu (for example, Asus F8 and Gigabyte F12).
    - Select to boot from the "UEFI: USB/DVD device name" (see screenshot below).

    If you are booting from a Windows 7/8/10 64-bit USB flash drive in UEFI Boot Mode, then UEFI firmware run \efi\boot\bootx64.efi file. Note: This file does not exist by default in the Windows 7 installation media, so you need to create this file by using the Rufus program, if you want UEFI Boot Mode compatible Windows 7 64-bit USB flash drive.

    If you are booting from a Windows 7/8/10 64-bit DVD in UEFI Boot Mode, then UEFI firmware run \efi\microsoft\boot\cdboot.efi file.

    Click image for larger version

    The Asus motherboard default UEFI firmware settings (see screenshots below).

    Windows 7/8/10 64-bit will be able to be installed successfully in UEFI Boot Mode.

    Click image for larger version

    CSM (Compatibility Support Module) > Launch CSM
    - [Auto]: The system automatically detects the bootable devices and the add-on devices.
    - [Enabled]: For better compatibility, enable the CSM to fully support the non-UEFI driver add-on devices or the Windows UEFI mode.
    - [Disabled]: Disable the CSM to fully support the Windows Security Update and Security Boot.

    Click image for larger version

    Click image for larger version

    Secure Boot > OS Type
    - [Windows UEFI Mode]: Execute the Microsoft Secure Boot check. Only select this option when booting on Windows UEFI mode or other Microsoft Secure Boot compliant OS.
    - [Other OS]: Get the optimized function when booting on Windows non-UEFI mode, Windows Vista/XP, or other Microsoft Secure Boot non-compliant OS.

    Click image for larger version

    After the Windows 8/10 64-bit installation is completed, you can check if Secure Boot option is enabled in the UEFI firmware. Run the following command as administrator from the command prompt.

    powershell confirm-SecureBootUEFI

    The result should be True.

    Microsoft designed Secure Boot to protect the computer from low-level exploits and rootkits and bootloaders. A security process shared between the operating system and Unified Extensible Firmware Interface (UEFI, replacing the BIOS), Secure Boot requires all the applications that are running during the booting process to be pre-signed with valid digital certificates. This way, the system knows all the files being loaded before Windows 8/10 loads and gets to the login screen have not been tampered with.

    If a bootloader has infected your computer and it tries to load during the boot-up sequence, Secure Boot will be able to undo all the changes and thwart the attack. Having Secure Boot means it is that much harder for attackers to try to compromise the start up sequence.
    Tip   Tip
    Asus UEFI setups allow for both UEFI and Legacy BIOS (aka CSM) booting to be enabled. In that case, Windows 7 can normally be booted with the motherboard's Secure Boot feature enabled as well, but without actually using it.

    Note: If you are dual booting Windows 7 64-bit and Windows 8/10 64-bit.

    You must select the following option.

    Secure Boot > OS Type > Other OS (default: Windows UEFI mode).

    Or you get the following error message when you start Windows 7.

    File: \Windows\system32\winload.efi
    Status: 0xc0000428
    Info: The digital signature for this file couldn't be verified.
    Last edited by genet; 06 Nov 2015 at 15:03. Reason: added more info
      My System SpecsSystem Spec

  3. #3

    Posts : 2
    windows 8.1

    Wow! genet, thank you for your quick reply and good instructions. I will see how it goes and hope I don't foul it up.
      My System SpecsSystem Spec

  4. #4

    Thank you Very Much Genet, but I have trouble by Asus ET1620I , This AiO Pc i try all Different Way's To install Windows but after Installation Windows in First Step and Rebooting This is Hanged and can not Running Windows, I try to 4 1620 and all have Same problem , I try by 5 Different image win 10 in Different Version Home, Pro, Enterprise (Update Nov.2015) (I using Rufus 2.6 to make GPT USB Disk)
      My System SpecsSystem Spec

  5. #5

    Sir I was just purchased ASUS H81M-C Mother Board.I want to install Windows 7 64 bit.For using my Seagate 4TB Hard disk.But I was facing the same problem which you are mentioned in first post last tip.I was facing File:\Windows\system32\winload.efi Status: 0xc0000428 this error every time.I was changed the secure boot to other OS and fast boot is disabled and CSM is disabled.After that also I was facing this error problem.Please tell me the solution for this problem any body.Thank you.
      My System SpecsSystem Spec

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