To turn on Secure Boot in a Gigabyte BIOS, you generally need to switch the system fully to UEFI mode, disable CSM, and then enable Secure Boot in the appropriate menu.

Before you start

  • Make sure Windows is installed in UEFI mode on a GPT disk; Secure Boot will not work properly with legacy/MBR installs.
  • If you are doing this for Windows 11 or an antiā€‘cheat requirement (Valorant, COD, Battlefield, etc.), also ensure TPM/fTPM is enabled in BIOS.

Stepā€‘byā€‘step: Typical Gigabyte BIOS

The exact wording can differ slightly between Intel/AMD and older/newer boards, but the flow is usually:

  1. Enter BIOS
    • Restart your PC and repeatedly press Delete (sometimes F2) as soon as it powers on.
  1. Switch to Advanced Mode
    • If you see ā€œEasy Modeā€, press F2 to enter the advanced BIOS interface.
  1. Enable TPM / fTPM (if needed)
    • Go to the Peripherals or Settings tab.
    • Find Trusted Computing , Security Device Support , Intel PTT (Intel) or AMD CPU fTPM (AMD).
    • Set Security Device Support to Enabled , and choose PTT or AMD fTPM as available, then Save & Exit (usually F10) and go back into BIOS.
  1. Disable CSM (Compatibility Support Module)
    • Go to the Boot or BIOS tab.
    • Find CSM Support and set it to Disabled.
 * Save changes (F10) and let the system reboot back into BIOS; on many Gigabyte boards Secure Boot options only unlock after this reboot.
  1. Enable Secure Boot
    • Back in BIOS, stay in Boot or go to Security (depends on BIOS skin/version).
    • Look for Secure Boot.
    • Set Secure Boot to Enabled.
    • If there is Secure Boot Mode , choose Standard (or Windows UEFI on some boards) rather than Custom.
 * If prompted or if Secure Boot keys show as ā€œnot installedā€, use **Install Factory Default Keys** or **Restore Factory Keys**.
  1. Save and exit
    • Press F10 , confirm Save & Exit, and let Windows boot normally.

Verifying in Windows

  • In Windows, press Win + R , type msinfo32, press Enter.
  • In System Information , check Secure Boot State ; it should say On if everything is correct.

Common problems and tips

  • If Secure Boot is greyed out:
    • Confirm CSM Support is disabled and that you have rebooted BIOS once after changing it.
* Ensure all boot devices are using UEFI (not ā€œLegacyā€ or ā€œBothā€).
  • If the system fails to boot after enabling Secure Boot:
    • Power off, then clear CMOS (jumper or remove the battery for a few minutes) to reset BIOS to defaults.
* Once back in BIOS, reā€‘configure boot order and try again, enabling CSM back temporarily if needed.
  • Older Gigabyte boards:
    • On some H81/B85/Z97ā€‘era boards, Secure Boot is under BIOS Features , and you must disable CSM first, save, reboot, then come back to toggle Secure Boot, just as in more recent tutorials.

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