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AMD Motherboards : can't boot into UEFI/Bios X570 PRO4

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Author: notlocalhorst
Subject: can't boot into UEFI/Bios X570 PRO4
Posted: 16 Oct 2019 at 6:48pm

Hi,

Before: i have Windows 10 and Linux on the same nvme ssd, everything fine. I installed Hyper-V which screwed up my VMWare installation and since then my problems started. First Linux stopped working, boot never finished. Next VMWare couldn't start my VM anymore because of this:
https://kb.vmware.com/s/article/2146361
So i did everything described in the Microsoft article and that caused the disappearance of UEFI.

- if i do nothing the system boots normally into win10
- i can't enter the UEFI with F2
- there is no boot "screen" with the bios information anymore (was in text mode before)
- last bios version was 1.40
- no OC, most settings default

what i already tried:

- removing the cmos battery and bridging the cmos reset header (first battery, than only cmos header and lastly i tried both).
- Restart to UEFI ver:1.0.6, nothing happens, black screen after reboot
- i removed all devices i could, now only nvme and GFX card (and USB stuff)
- ASRock Live Update isn't showing any bios updates, only drivers (yet, 1.70 is on the webpage)

so ... any ideas how to fix it? I searched the documentation, it seems there is no bios rescue mode or bios install without entering the bios?

appreciate any help, thanks!


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