BIOS failure on failure to open signature file.

[John_George]

HP BIOS F.43 fails on failure on failure to open signature file. Please advise.

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The OS is:

Edition Windows 11 Pro
Version 24H2
Installed on ‎12/‎12/‎2024
OS build 26100.3915
Experience Windows Feature Experience Pack 1000.26100.83.0

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The BIOS release note:

TITLE: HP Notebook System BIOS Update (Intel Processors)
VERSION: F.43 REV: A PASS: 1
DESCRIPTION:
This package provides the Windows-based HP system BIOS update and includes essential upgrades for firmware on a computer system. BIOS is a type of firmware, and firmware is software embedded on the system board to control hardware components.

PURPOSE: Routine
SOFTPAQ NUMBER: sp158356
SOFTPAQ FILE NAME: sp158356.exe
SOFTPAQ MD5: E448035E2F0C6CFD6E160BAF757A4D12
SUPERSEDES: sp155725
EFFECTIVE DATE: May 09, 2025
CATEGORY: BIOS
SSM SUPPORTED: Yes

[zoey7886]

@John_George, Welcome to the HP Support Community! 

Thanks for reaching out about your query regarding BIOS Signature File Error!

We're thrilled to have the opportunity to assist you and provide a solution. 

Power Cycle Your Laptop:

• Sometimes, a power cycle can reset the components and resolve the issue. Turn off your laptop, disconnect all peripherals, remove the power adapter, and remove the battery if possible. Wait for about a minute, then reinsert the battery and power adapter and restart your laptop.

Access HP System Diagnostics:

• Restart your computer and press the Esc key repeatedly until the Startup Menu opens.
• Press F2 to open System Diagnostics and run a comprehensive test to check the integrity of the hardware components.

Update BIOS (if accessible):

• If the laptop can boot, visit the HP support site to check for any BIOS updates and follow the instructions to update the BIOS. Ensure the update file is correctly downloaded without corruption.

BIOS Recovery (for Notebooks):

• You can attempt to recover the BIOS if it's corrupted by pressing and holding the Windows + B keys while the device is powered off. Hold these keys and then press the power button for about 3 seconds before releasing the power button but keep holding the Windows and B keys.
• This should trigger the BIOS recovery process.

Reinstall BIOS via USB (Advanced):

• If possible, download the correct BIOS update from HP's official website onto a USB stick.
• With the computer off, insert the USB drive, and power on the computer holding the appropriate keys that might be F10, F12, F9 depending on the model to boot from the USB and reinstall the BIOS. 

Hope this helps!

Take care, and have an amazing day! 

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Regards,