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M11 Hero: Cannot launch EFI Shell because "Secure Boot is on" - despite already off!

The_Spirit_of_M
Level 7
Hello,

I need to launch EFI shell on my M11 Hero (BIOS version 1502) in order to install Win7 in Pure UEFI mode (no CSM). The installation process itself is already successfully completed - I just need to modify the bootloader as a final step in order to get Win7 running. And in order to do that, I have to launch EFI shell from the BIOS - but my BIOS is refusing to launch, stating "Secure Boot is enabled"... despite already being disabled! ("disabled", "unloaded", "Other OS" in the Boot\Secure Boot section of my BIOS - that means, I deleted the Secure Boot keys as well!)

WTF is going wrong? :mad:

Thx for advise,

T.S.O.M.
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1 REPLY 1

The_Spirit_of_M
Level 7
Upgrading to BIOS version 1602 didn't solve this problem either - WTF I'm supposed to do?

A little more background information: BEFORE installing Win7 I had/have already Win10 installed, but it's bootloader is on the HDD, not the SSD - and I installed Win7 on the SSD. (after cleaning/clearing it and converting it into a GPT drive)

T.S.O.M.