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C-Fou's avatar
C-Fou
Copper Contributor
Dec 16, 2022
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Windows 11 22h2 enabling Hyper-V cause BSOD

Hi, When enabling Hyper-V on Windows 22H2 fresh install (not an upgrade), I've got an WHEA_UNCORRECTABLE_ERROR or an UNMOUNTABLE_BOOT_VOLUME error on first restart (depending on having install last ...
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  • C-Fou's avatar
    C-Fou
    Jun 30, 2023

    Since no one gave a solution, I reply to my own question to help people who may have the same problem.

    I seems many people go into Windows 11 22H2 madness, despite last updates of everything I could done, I was keeping those weird BSOD, with error changing between installations without any reason.

    In my case, the Kernel DMA Protection in the UEFI Setup was responsible of it. I needed to disable it in order to boot with Hyper-V. I am not able to enable it again after Hyper-V installation correctly done. If so, I go into BSOD again...

    thanks to this thread on hp forum :
    https://h30434.www3.hp.com/t5/Desktop-Operating-Systems-and-Recovery/Inaccessible-Boot-Device-BSOD-after-upgrading-to-Win-11-22H2/td-p/8611767

    This UEFI setting seems causing many problems with this Windows version, with Lenovo, HP or Dell, in some cases it even prevent to install Windows with BSOD of first or second reboot.

    I hope this help

jarochodaman's avatar
jarochodaman
Copper Contributor
Jul 05, 2023
same here, lenovo x390, bootloop after enabling hyper v, end up restoring OS
C-Fou's avatar
C-Fou
Copper Contributor
Jul 07, 2023

jarochodaman, have you tried to disable Kernel DMA Protection ? if not, look above dieterp0203 message, he gave the way to do it in UEFI Setup. Verify you have the last version for your UEFI (BIOS) too

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