Some M.2 SSD drives cause soft-bricking when trying to disable CSM support in UEFI

HARDWARE

I wanted to enable secure boot on my PC to be able to play Battlefield 2042 and in the future Battlefield 6. To be able to do that, I needed to disable "CSM support" first to even have the "Secure boot" shown.

After disabling CSM support and restarting the PC to get to UEFI again, the PC gets stuck at the "AORUS" logo and doesn't even let me enter UEFI again.

I went through checking the usual: all paritions are GPT, bcdedit shows 1 clean entry, no additional funny partitions to be seen, etc.
The only thing that helped was to disconnect one of my M.2 SSD drives: ADATA 512GB M.2 PCIe XPG SX8200 Pro.

The other M.2 SSD drive (KIOXIA 1TB M.2 PCIe NVMe EXCERIA G2) didn't bother my PC at all and allowed for disabling CSM support and enabling secure boot.

So, I decided that since the ADATA drive was my oldest one, maybe it's time to buy a new drive. Thus, I bought SSD KINGSTON 2TB NV3 M.2 NVMe PCI-e 4.0. And, surprise, surprise, this drive ALSO causes the same problem when CSM support gets disabled...

Could anyone tell me if it's just the fault of my motherboard or what the heck is going on?

Motherboard: Gigabyte Z370 AORUS Gaming K3 rev: 1.0
BIOS version: F15

Posted Sep 2, 2025, 3:32 PM UTC

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