To change Secure Boot state, you generally need to do it from your system firmware (UEFI) settings. Here’s a concise guide to get you there and know what to expect. Direct answer

• Enabling or disabling Secure Boot is done in the UEFI/BIOS interface, not from Windows or other operating systems. You usually access it by rebooting into the firmware settings, then changing the Secure Boot option, and saving your changes.

Steps you can follow

• Determine current state
  • On many systems, you can check Secure Boot status from Windows by opening System Information and looking for the “Secure Boot State.” If you see On or Off, this tells you the current state. If you’re unsure, assume you’ll need to change it from the firmware to be sure.
• Access the firmware settings
  • Windows method (common):
    • Open Settings -> Update & Security -> Recovery.
    • Under Advanced startup, click Restart now.
    • After reboot, choose Troubleshoot -> Advanced options -> UEFI Firmware Settings, then Restart.
  • Keyboard/firmware method (typical on most PCs):
    • Restart your computer and press the key that enters firmware/BIOS setup (common keys: F2, F10, F12, Del, Esc). The exact key varies by manufacturer and model.
• Change Secure Boot state
  • In the firmware interface, navigate to the Boot or Security tab (the naming varies by vendor).
  • Locate Secure Boot (it may be under a sub-menu named Secure Boot, OS Type, or Platform Key Management).
  • Set it to Enabled to turn on Secure Boot, or Disabled to turn it off. Some systems require OS Type to be set to Windows UEFI to enable Secure Boot; others allow a simple toggle.
  • If your firmware shows “Key Management” or similar, you may first need to install or reset keys (this can affect the ability to enable Secure Boot).
• Save and exit
  • Save changes (often F10 or via a Save & Exit option) and reboot.
  • After reboot, you can re-check Secure Boot status via the same method you used before (e.g., Windows System Information) to confirm the new state.
• Troubleshooting notes
  • If Secure Boot cannot be enabled due to missing keys, you may need to enroll or reset Platform Keys (PK) in the firmware, or perform a related firmware update from the vendor.
  • Certain hardware configurations or legacy operating systems may require Secure Boot to be disabled for compatibility.
  • If you plan to install Linux or custom kernels, ensure Secure Boot compatibility or disable Secure Boot before installation.

Common vendor paths (illustrative)

• Many motherboard/PC vendors place Secure Boot under a Boot or Security tab in the UEFI, with an OS Type or Platform Key setting that must be set to Windows UEFI for Secure Boot to be active. After changing, you typically need to save and reboot. If you need model-specific steps, share your PC or motherboard model and I can tailor the exact menu labels you’ll see.

If you want, share your device model (manufacturer and exact model) and your current Secure Boot state (if you know it), and I can provide a step-by-step for your exact firmware interface.