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‎05-14-2026 01:07 PM

HP Recommended

Windows crashed, black screen and invalid signature detected. Check secure boot policy in setup

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1 REPLY 1

‎05-17-2026 03:28 AM

HP Recommended

Hi @Vale39 

 

Welcome to the HP Support Community! We're here to help you get back up and running.

 

We acknowledge the situation you are facing with the black screen and the Secure Boot error message. Let us proceed with clear steps to restore functionality.

 

  1. Power off the computer completely.
  2. Power it back on and immediately press Esc repeatedly until the Startup Menu opens.
  3. From the Startup Menu, press F10 to enter BIOS Setup.
  4. In BIOS, use the arrow keys to navigate to Security > Secure Boot Configuration.
  5. If prompted, enable Legacy Support temporarily to access options.
  6. Locate Restore Factory Keys and select it. Confirm the action.
  7. Ensure that Secure Boot is set to Enabled and Legacy Support is set to Disabled after restoring the keys.
  8. Press F10 to save changes and exit BIOS.
  9. Allow the system to restart and check if Windows loads correctly.
  10. If the issue persists, perform a BIOS update using HP’s official support page for your product model. This ensures the latest Secure Boot policies are applied.

 

For detailed instructions on updating BIOS and restoring Secure Boot keys, please refer to the guide below:
HP PCs - Secure Boot (Windows)

 

These steps are designed to help the system validate signatures correctly and restore normal startup.

 

Take care, and have an amazing day!

 

Regards, 

Hawks_Eye

I'm an HP Employee.


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