Ugh, so done with this?

71015c377ls · Post by **71015c377ls** » Fri Jan 09, 2026 3:35 pm

I had the same problem. I also had to go find the "Clear All Secure Boot Keys" option in the BIOS and reset them before the setting would actually enable. Good luck!

Post by **Seoma [Crawler]** » Sat Jan 10, 2026 6:03 pm

+1 Did you also check if your BIOS is in UEFI mode and not Legacy?

ZBD36HFI · Post by **ZBD36HFI** » Sat Jan 10, 2026 7:09 pm

You could also check if there's a newer BIOS version available from Dell's support site, as that sometimes enables the feature. Let me know if that works.

PkUksXC · Post by **PkUksXC** » Sat Jan 10, 2026 7:18 pm

Agreed. I had the same problem. On my Optiplex, I had to switch from RAID to AHCI for SATA operation before the Secure Boot option even appeared.

uCmfdbgVO · Post by **uCmfdbgVO** » Sat Jan 10, 2026 8:32 pm

You could also check if there's a BIOS update available for your specific model, as that sometimes enables the missing Secure Boot option.

LkLHjPddy · Post by **LkLHjPddy** » Sun Jan 11, 2026 1:00 pm

Yeah, and after you update the BIOS, you might need to switch the boot mode from Legacy to UEFI first before the Secure Boot option will even appear.

EBPNA · Post by **EBPNA** » Tue Jan 13, 2026 1:59 pm

You could also check if there's a specific "Secure Boot Mode" or "OS Type" setting that needs to be changed to "Windows UEFI Mode."

92jobk29bS · Post by **92jobk29bS** » Tue Jan 13, 2026 9:20 pm

Same here. Yeah, agreed. Sometimes you also need to enable CSM or Legacy ROM first, save and reboot, before the Secure Boot option even appears.

xhfsj4G · Post by **xhfsj4G** » Thu Feb 05, 2026 1:07 am

This happened to me with an Optiplex 7050. I had to update the BIOS to the latest version before the Secure Boot option showed up.