F5F Stay Refreshed Hardware Desktop Fails to start due to secure boot restrictions.

Fails to start due to secure boot restrictions.

Fails to start due to secure boot restrictions.

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QuintenvH2001
Member
183
06-30-2021, 10:52 AM
#1
Hi, I'm attempting to install Windows 11 on my PC (R5 3600, 16GB RAM, GTX 1650 Super). I went through the BIOS settings and turned off Secure Boot, but it asked me to disable CMS. After that, it won't boot from the SSD, doesn't display any disks in the boot menu, and the boot options are missing altogether. My motherboard is an ASRock B550 Steel Legend with BIOS version 1.90—probably outdated. I'm unsure if my hardware is compatible, though the SSD is from Kingston with a 480GB capacity.
Q
QuintenvH2001
06-30-2021, 10:52 AM #1

Hi, I'm attempting to install Windows 11 on my PC (R5 3600, 16GB RAM, GTX 1650 Super). I went through the BIOS settings and turned off Secure Boot, but it asked me to disable CMS. After that, it won't boot from the SSD, doesn't display any disks in the boot menu, and the boot options are missing altogether. My motherboard is an ASRock B550 Steel Legend with BIOS version 1.90—probably outdated. I'm unsure if my hardware is compatible, though the SSD is from Kingston with a 480GB capacity.

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RaisedFist99
Junior Member
31
07-21-2021, 05:58 PM
#2
how ironic
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RaisedFist99
07-21-2021, 05:58 PM #2

how ironic

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mikail1
Member
187
07-21-2021, 07:46 PM
#3
Your boot device likely relies on the MBR partition table. Using MBR means CSM is still needed for modern UEFI support. Turning off CSM will prevent the system from booting from that drive. You should reinstall the operating system via GPT/UEFI boot instead of MBR. Before starting the reinstall, verify in disk management that the drive is indeed MBR to avoid further issues.
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mikail1
07-21-2021, 07:46 PM #3

Your boot device likely relies on the MBR partition table. Using MBR means CSM is still needed for modern UEFI support. Turning off CSM will prevent the system from booting from that drive. You should reinstall the operating system via GPT/UEFI boot instead of MBR. Before starting the reinstall, verify in disk management that the drive is indeed MBR to avoid further issues.

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WeeZiii
Junior Member
33
07-22-2021, 02:12 AM
#4
Yes, it's MBR. You can try updating or repairing the boot sector without reinstalling Windows. If that doesn't work, you may need to reinstall Windows.
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WeeZiii
07-22-2021, 02:12 AM #4

Yes, it's MBR. You can try updating or repairing the boot sector without reinstalling Windows. If that doesn't work, you may need to reinstall Windows.

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sjm2007
Junior Member
1
07-22-2021, 02:41 PM
#5
Changing the drive format to GPT will erase the existing data, meaning a reinstall is necessary. While some tools can transform drives into GPT without wiping them, using this drive for booting from isn't recommended since MBR and GPT handle boot sectors differently.
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sjm2007
07-22-2021, 02:41 PM #5

Changing the drive format to GPT will erase the existing data, meaning a reinstall is necessary. While some tools can transform drives into GPT without wiping them, using this drive for booting from isn't recommended since MBR and GPT handle boot sectors differently.

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GiuGG23
Junior Member
26
08-11-2021, 02:53 AM
#6
Thank you for your help. I have already set up Windows 11. I just got it from a modified USB drive.
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GiuGG23
08-11-2021, 02:53 AM #6

Thank you for your help. I have already set up Windows 11. I just got it from a modified USB drive.