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Posted: Fri Jan 09, 2026 10:05 pm
by 7873beosoj
Agreed. This happened to me. I had to go into the BIOS and switch from CSM/Legacy to UEFI mode first, and then the Secure Boot option became available. Hope that helps.
Posted: Sat Jan 10, 2026 3:03 pm
by isxBCHdWKV
Same here. Yeah, that's exactly it. Also, make sure you save and exit after switching to UEFI, then go back in to find Secure Boot ready to enable.
Posted: Sat Jan 10, 2026 4:27 pm
by UFUqOfQa
Yeah, Agreed. Also, double-check that your drive is using GPT and not MBR, as that can lock the option too.
Posted: Sun Jan 11, 2026 9:06 pm
by 3808fwojncsg
This, and sometimes you also need to clear any existing platform keys in the BIOS to reset it.
Posted: Mon Jan 12, 2026 5:22 pm
by hOOXWHN
Can confirm. I had the same problem. For me, I also had to disable CSM support in the BIOS completely before the Secure Boot option even became available to turn on.
Posted: Mon Jan 12, 2026 7:40 pm
by 4893zd
Same here. You could also check if you need to switch the BIOS from "Custom" to "Standard" Secure Boot mode, which sometimes unlocks it.
Posted: Tue Jan 13, 2026 4:29 am
by 8531eqosym
+1 Also, have you cleared the TPM or reset your BIOS to factory defaults since the upgrade?
Posted: Tue Jan 13, 2026 10:16 pm
by 531pty
Yeah, Did you also switch your BIOS from Legacy/CSM mode to UEFI-only?
Posted: Fri Jan 16, 2026 1:26 pm
by xnyGEwG5XWOc
+1 Agreed, switching to UEFI is usually the fix. Also, you might need to set a supervisor or administrator password in the BIOS first—some systems lock that setting behind it.
Posted: Sat Jan 17, 2026 2:43 am
by qqhr3
+1 Yeah, and after you set that password, don't forget to clear any existing TPM/security keys in the BIOS before you try turning Secure Boot on.