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A 15.6in laptop with an identified by model number: BoB-Wai9

23 Questions View all

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No Boot Device After Turning On the Secure Boot

Huawei MateBook D 15

I tried to enable Secure Boot.I got the error No Boot Device, I can only go into windows when I disable it. But I need the Secure Boot enabled so I can play Valorant.

When the Secure boot is enabled Bios does see the SSD

Is it a problem with the Windows UEFI do I need to format the PC.

Güncelle (07/21/26)

It does show the asterisk. But I dont have the Bios setting for CSM/Legacy support does not exist in BIOS. I tried to reset the BIOS, nothing changed What should I do?

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Hello, it could be a couple of things I can think of, to help find out the cause, boot into Windows with Secure Boot off, open a command window cmd ctrl-shift-enter or just open admin cmd,

type:

diskpart , hit enter

type:

lis dis , hit enter (short for list disk)

check the output, find your disk - in the GPT column for your drive is there an asterisk? If not, then that is why. You would need to investigate mbr2gpt conversion, which can be... a little more tricky, or not!

If your disk is GPT format already, then the culprit could be in BIOS settings, look for Legacy/CSM Support type options, usually they are off when Secure Boot is turned on, but it really depends on the BIOS... (search up your motherboard and BIOS version + secure boot may help?)

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It does show the asterisk. But I dont have the Bios setting for CSM/Legacy support does not exist in BIOS. I tried to reset the BIOS, nothing changed What should I do?

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Eren Günaydın will be eternally grateful.
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