Ugh, so done with this?

8664l · Post by **8664l** » Fri Jan 09, 2026 8:01 pm

Yeah, and once you're in the BIOS, you'll usually find the Secure Boot option under the Security or Boot tab.

iBrvlhGTfZjq · Post by **iBrvlhGTfZjq** » Sat Jan 10, 2026 12:47 pm

Yeah, You could also check if there's a separate "CSM" or "Legacy Support" setting that needs to be disabled first, as that often locks the Secure Boot option.

05xvijI11j9 · Post by **05xvijI11j9** » Sat Jan 10, 2026 4:58 pm

Yeah, Agreed, and once you switch it on, you might need to go back into the BIOS and change the boot mode from Legacy/CSM to UEFI for it to stick.

58suwh · Post by **58suwh** » Sat Jan 10, 2026 8:35 pm

Right, and after that change, you'll probably need to reinstall Windows fresh to get it working. Good luck!

a9Y42o0x · Post by **a9Y42o0x** » Sun Jan 11, 2026 2:59 pm

Yeah, and just a heads up—make sure to back up anything important before that fresh install.

LEUzRK · Post by **LEUzRK** » Sun Jan 11, 2026 3:49 pm

You could also check your BIOS settings to see if Secure Boot is enabled but maybe set to the wrong mode, like "Other OS" instead of "Windows UEFI."

evWqKfTEEh · Post by **evWqKfTEEh** » Mon Jan 12, 2026 11:54 pm

This. I had the same problem. On my own ThinkCentre, Secure Boot was actually enabled in the BIOS, but it was set to "Other OS" and switching it to "Windows UEFI" was the fix.

3076akpyp · Post by **3076akpyp** » Thu Feb 05, 2026 10:23 pm

+1 Yeah, that "Other OS" setting is a common gotcha—did switching it to "Windows UEFI" in the BIOS finally get you past the check?