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    ROG Member Array Eguun PC Specs
    Eguun PC Specs
    MotherboardAsus ROG MAXIMUS XI EXTREME (Z390 EATX)
    ProcessorIntel(R) Core(TM) i9-9900K CPU @ 3.60GHz
    Memory (part number)Corsair DOMINATOR® PLATINUM 16GB (2 x 8GB) DDR4 4000MHz (SKU: CMD16GX4M2E4000C19 ver 4.31)
    Graphics Card #1MSI - NVIDIA GeForce RTX 2080 8 GB GAMING X TRIO
    Storage #1Samsung SSD 970 PRO 512GB
    Storage #2Samsung SSD 960 PRO 512GB
    CPU CoolerNoctua NH-D15
    CaseCooler Master MasterCase H500M
    Power SupplySeaSonic - PRIME Ultra Titanium 650 W 80+ Titanium
    Mouse SteelSeries Rival 500
    Headset ROG Centurion true 7.1
    OS Windows 10 Pro 64bits

    Join Date
    Feb 2018

    Exclamation Maximus XI extreme: XMP issue on BIOS ver 1105

    Dear all,

    I am having issues with XMP profiles on the latest BIOS version 1105 on my ROG Maximus Extreme.
    Previous version 1005 (and below) were OK.

    When enabling XMP (1 or 2), my RAM OC settings are properly detected, and I can save settings OK.
    But after having saved the settings, during each boot before POST, the motherboard powerdown itself and power back up. It does it ~4 times on cold boot (ie: when power is switched off and outlet disconnected for more than 10 seconds). Only after these 4 cycles do I get a proper POST with the "press F2 to enter bios settings".
    It's as if the motherboard has issue POSTing properly once XMP is enabled.
    When entering bios after these poweron/poweroff cycles at boot, I discover that some BIOS settings are changed from auto to fixed values (such as CPU VCCIO).
    Sometimes even my XMP values are overriden (such as the frequency, for a lower setting).

    I even tried to manually set in the bios the RAM parameters of the XMP profile (and disable XMP, since I had already punched-in the proper settings in the bios), but the behavior of several poweron/off cycles at boot remains.

    I'm a bit puzzled on this behavior, that only occurred a few weeks ago when upgrading to the 1105 BIOS, which claims to feature "Improved DRAM compatibility" in its changelog.
    As all was working very fine before the Bios software upgrade, I'm not convinced this is an hardware issue.

    Is anyone else also experiencing these issues?

    What would be your recommendation?

    Full config details:
    Processor: Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
    Motherboard: Asus ROG MAXIMUS XI EXTREME / Bios version 1105 (latest at time of writing post)
    Memory: Corsair DDR4 2x8GB (SKU: CMD16GX4M2E4000C19)
    Graphic card: NVIDIA GeForce RTX 2080 / driver version 430.86 (latest at time of writing post)
    OS: Windows 10 Pro 64bits / version 1903 (latest at time of writing post)

    Kind Regards
    Last edited by Eguun; 07-08-2019 at 05:58 AM.

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