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11-05-2026 12:48 PM
URGENT BIOS and secure boot help - HP OMEN 25L GT12
I need help getting call of duty modern warfare 4 multiplayer working on my HP OMEN 25L.
computer details:
product number: 587L8EA#ABU
motherboard ID: 8876
BIOS version: F.21
AMD TPM firmware: 3.92.0.5
windows 11.
the game says my TPM firmware needs updating and security boot is not enabled.
HP offers BIOS F.24 Rev A (SP165481) and i have downloaded it but not installed it.
Can anyone confirm wether this is the safe update for my Exact PC and explain how to enable secure boot afterwards without causing windows or bitlocker recovery problems?
i have my bitlocker key safely backed up. Thank you
11-07-2026 08:26 AM
Hi @BEAN1625
Welcome to the HP Support Community.
Thank you for posting your query.
BIOS Version F.24 is explicitly confirmed by HP as the required minimum BIOS update for your OMEN 25L Desktop PC GT12-1000a to resolve the AMD fTPM attestation issue. Installing this update addresses the underlying TPM firmware error where the system cannot verify the identity or integrity of the TPM chip.
PLEASE NOTE:
- Run Installer (SP165481): Follow the on-screen prompts to flash the BIOS.
- TPM Initialization: Once the BIOS flash completes and the system restarts, a message will display as part of the TPM initialization and reset process.
- BitLocker & PIN: Because the TPM resets, Windows may prompt you to re-enter your BitLocker recovery key or reset your Windows PIN upon booting. Having your BitLocker recovery key backed up ensures you can safely complete this step without data loss.
How to Enable Secure Boot Safely
Access BIOS Setup
- Turn off your computer completely.
- Press the power button and immediately press F10 repeatedly until the BIOS setup menu opens (or press Esc repeatedly until the Startup Menu appears, then select F10).
- (Alternative from Windows): Open Settings > System > Recovery, click Restart now next to Advanced startup, then navigate through Troubleshoot > Advanced options > UEFI Firmware settings > Restart.
Configure Secure Boot
- In BIOS, use the arrow keys to navigate to the Security menu.
- Select Secure Boot Configuration and press F10.
- Set Legacy Support to Disable (Windows 11 requires UEFI/Legacy disabled, and Secure Boot cannot be enabled while Legacy Support is active).
- Set Secure Boot to Enable.
- Press F10 to accept the configuration changes.
Save and Exit
- Press F10 again, then press Enter twice to save your settings and restart the PC.
Windows Verification & Sign-In
- When Windows loads, enter your BitLocker recovery key if prompted, and follow the on-screen instructions to reset your Windows PIN if required.
- To confirm Secure Boot is active, search for System Information in Windows. Verify that BIOS Mode is listed as UEFI and Secure Boot State is On
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Hope this helps, Please revert if the issue persists.
Take care and have an amazing day!
I'm an HP Employee.
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