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  1. #1
    ROG Member Array patrickmollohan PC Specs
    patrickmollohan PC Specs
    MotherboardAsus Rampage V Extreme
    ProcessorIntel i7-5930k
    Memory (part number)Crucial Ballistix Sport 8GB (1x8GB) DDR4
    Graphics Card #1EVGA GeForce GTX 970 SSC
    Storage #1Samsung 840 Pro 128GB
    Storage #2Seagate Desktop HDD ST4000DM000 4TB
    CPU CoolerCorsair Hydro Series H100i Water Cooler
    CaseRosewill Throne-G
    Power SupplyRosewill BRONZE Series RBR1000-M 1000W
    Keyboard Logitech G15 Gaming Keyboard
    Mouse Utechsmart Venus 50
    Headset Logitech G430 7.1 Surround Sound Gaming Headset
    OS Macintosh OS X 10.10 Yosemite, Ubuntu Linux 14.04, Windows 8.1

    Join Date
    Nov 2014

    Disable Secure Boot

    I was wondering how I disable Secure Boot in the BIOS? I know there is a section under the Boot tab for it to switch between "Windows" and "Other OS", but after selecting "Other OS" and saving, it still says that Secure Boot is enabled.
    Thank you much for your time!

  2. #2
    ROG Enthusiast Array
    Join Date
    Oct 2012

    you can leave it at "Windows" setting.
    Secure boot is only completely active, when you disable CSM under the CSM tab.
    The CSM (Compatibility Support Module) let you decide, if you want to enable full secure boot with only UEFI startup environment (CSM disabled), or also startup with legacy components. CSM enabled is the standard. So you dont have to change any settings.
    MB: Rampage V Extreme
    CPU: Intel Core i7 5960X (@4,2 / Adaptive Voltage 1,23V)
    RAM: G.Skill Ripjaws 4 (32GB-Kit 2666-15-15-15-35 @1,2V)
    GPU: EVGA Geforce GTX Titan X Superclocked and Geforce 480 GTX
    PSU: Corsair AX1500i
    M2: Samsung XP941
    SSD: 2 x Samsung 840 pro
    HD: HGST He8 8TB
    Display: Asus ROG Swift PG278Q
    Keyboard: Cherry MX Board 6.0
    Mouse: Steelseries Sensei MLG Edition/ Zowie ZA12
    OS: W8.1 pro

    CPU and GPUs watercooled

  3. #3
    ROG Enthusiast Array
    Join Date
    Aug 2014

    you must delete the key in the menu near to security.
    I had to do it to be able to boot in uefi mode on my usb memory stick for memtest.

  4. #4
    ROG Enthusiast Array D.S.O. PC Specs
    D.S.O. PC Specs
    Laptop (Model)MacBook Pro 17"
    MotherboardRampage V Extreme
    Memory (part number)CMD64GX4M8A2400C14
    Graphics Card #1Strix-GTX980-DC2OC-4GD5
    Sound CardSB1510-ZxR
    MonitorU3014 x 2
    Storage #1PX-G512M6e
    Storage #22 x iSSD DC S3500 800GB
    CPU CoolerWater 3 Extreme
    CaseLevel 10 GT (snow)
    Power SupplySS-1250SM
    Keyboard G910 Orion Spark
    Mouse R.A.T. 9 (white)
    Headset MM 550-X travel
    OS Win. 8.1 Pro 64
    Network Router7800VDOX

    Join Date
    Dec 2014

    I think that the simplest would be to disable Security Device Support in Advanced\Trusted Computing.

  5. #5
    ROG Member Array
    Join Date
    Feb 2019

    Tuf z390 Gaming wifi

    From Asus as to how to disable secure boot
    Getting secure boot in the BIOS disabled so you can use the Linux Distro.
    BIOS -> Boot -> CSM (Compatibility Support Module) -> Launch CSM -> Enabled
    1. Boot mode -> UEFI and Legacy
    2. Boot from Network -> Legacy (old drives); or UEFI mode (for NVME/SSD drives)
    3. Boot from Storage -> Legacy (old drives); or UEFI mode (for NVME/SSD drives)
    4. Boot from PCIE/PCI -> Legacy (old drives); or UEFI mode (for NVME/SSD drives)
    5. Go back to Boot -> Secure Boot -> OS Type -> Windows UEFI Mode (Windows 10/8.1/8) and Other OS (for Windows 7)

    >>Settings Asus engineering (after CEO) said to use to disable secure boot on my z390 board; it did not work.
    Please help

  6. #6
    ROG Guru: Brown Belt Array MrAgapiGC PC Specs
    MrAgapiGC PC Specs
    MotherboardAsus Maximus XI Code
    Memory (part number)CMK32GX4M4B3600C18
    Graphics Card #1STRIX-GTX1080ti-O8G-GAMING
    MonitorAOC AGON AG2701QX (2)
    Storage #1Samsung 960 EVO 256GB
    Storage #2Kingston Savage 500GB
    CPU CoolerNzxt X74 360mm AIO
    CaseNzxt H700
    Power SupplyEVGA 850 G2
    Keyboard Logitech G810
    Mouse Asus Spartha
    Headset Hyper X Cloud Revolver S
    Mouse Pad Hyper X Fury S 900mx420mm
    Headset/Speakers Logitech Z337
    OS Windows 10 64btis
    Network RouterTpLink Archer C9
    Accessory #1 EKWB FANs all of them
    MrAgapiGC's Avatar
    Join Date
    Nov 2011

    I am using Secure boot. no problem for the moment. What i did for my nvme was (960evo) disable CSM, WINDOWS UEFI, secure boot is active, BUT! in my board (codexi AMI nvme support is DISABLE). since the Samsung use his own driver. Depending on the os, like some LINUX CSM need to be change to legacy. I will continue testing. since there other changes how the of works and how peripherals drivers works. even with info around there are some dark areas on that subject. I have ask a lot.
    Learn, Play Enjoy!

  7. #7
    ROG Guru: Brown Belt Array Vlada011 PC Specs
    Vlada011 PC Specs
    MotherboardRampage V E10 (BIOS 1903)
    ProcessorIntel®i7-5820K (4.5GHz 1.325V)
    Memory (part number)CMD16GX4M4A2666C15
    Graphics Card #1ASUS GTX1080Ti Poseidon
    Sound CardSound Blaster ZxR
    MonitorSamsung P2450H
    Storage #1Samsung 970 EVO PLUS 1TB
    Storage #2Samsung 850 EVO 1TB/WD Black 2TB
    CPU CoolerEK RGB Monoblock RVE10
    CaseLian Li PC-O11 WXC
    Power SupplyEVGA 1200 P2
    Keyboard Deck 87 Francium PRO - MX Brown DS PBT
    Mouse Logitech G900
    Mouse Pad Steeseries QCK
    Headset/Speakers CREATIVE T5900 5.1
    OS Windows 10 Pro x64 v1903
    Accessory #1 iPhone SE Space Grey
    Accessory #2 EK XRES D5 Revo 100 Glass PWM + CoolstreamPE 360
    Accessory #3 Noctua NF-A12x25 PWM x3 (radiator)
    Vlada011's Avatar
    Join Date
    Oct 2013

    I keep Secure Boot On.

    When is best to install Secure Boot Keys, before Windows 10 Installation. First Install Secure Boot Keys and then Install Windows.
    Or immediately after you install Windows?

  8. #8
    ROG Member Array
    Join Date
    Feb 2019

    disable secure boot

    I started this thread so I thought it appropriate that I give what I think is the answer because I did lean on quite a few people and the thread was quite extensive. In order to disable boot on z 390 ASUS motherboard on my TUF Gaming Plus Wi-Fi set one has to go to firmware> Advanced. From advanced to secure boot and change secure boot mode from UEFI to other, exit and save changes. This disables secure boot. To enable it, the reverse is done. It can be verified through either system information or Security >Device. I hope this helps someone who follows me with this issue who wishes to use some Linux distros.

    Unfortunately, ASUS, and the builder did not provide the correct fix nor did any forums I tried including the ASUS forum.

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