Invalid Boot Signature

Jose Marrero 0 Reputation points
2026-09-18T01:41:03.1066667+00:00

How do I fix an invalid boot signature on my HP all in one home pc?

Windows for home | Windows 11 | Performance and system failures
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  1. Ivan B 124.1K Reputation points Independent Advisor
    2026-09-18T02:13:14.3166667+00:00

    Hi,

    If the Q&A Assist procedure didn't work:

    Search for msinfo32.exe in the search bar, take a screenshot, and post it here so we can see the correct laptop model or desktop configuration.

    Thanks.

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  2. AI answer

    2026-09-18T01:41:22.6666667+00:00

    An invalid boot signature on an HP home PC is commonly a Secure Boot trust problem. The supported fixes in the provided guidance are:

    1. Enter the UEFI/BIOS firmware menu.
      • During startup, common keys include Esc, F1, F2, F10, F11, or F12.
      • From Windows, another path is Shift + Restart → Troubleshoot → Advanced options → UEFI Firmware Settings.
    2. If the error started after a Secure Boot certificate update and the PC no longer boots, try resetting Secure Boot settings in firmware.
      • If the PC boots after the reset, install the latest HP firmware/BIOS update from the manufacturer before turning Secure Boot back on again.
      • If resetting Secure Boot does not restore booting, OEM-specific recovery is likely required.
    3. If the problem happened after Secure Boot was reset to firmware defaults, restore the missing certificate with the Secure Boot recovery utility:
      • On a second Windows PC with the July 2024 or newer Windows update installed, copy SecureBootRecovery.efi from C:\Windows\Boot\EFI\.
      • Put it on a FAT32 USB drive in \EFI\BOOT\.
      • Rename it to bootx64.efi.
      • Boot the HP PC from that USB drive.
      • The utility restores the Windows UEFI CA 2023 certificate to the Secure Boot DB.
    4. If Windows starts only when Secure Boot is off, temporarily disable Secure Boot in BIOS:
      • In BIOS, the setting is usually under Security, Boot, or Authentication.
      • Set Secure Boot to Disabled, save changes, and restart.
      • This is a workaround to regain access to Windows while checking for an HP firmware update.
    5. For HP-specific readiness and recovery guidance, use HP’s Secure Boot support page listed in the OEM support matrix.

    Important: Disabling Secure Boot reduces boot-time protection. Re-enable it after applying the correct firmware update or recovery steps.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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