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HP Recommended
Pavilion 15-cw1024la
Microsoft Windows 10 (64-bit)

Intro

My laptos was running though overheating problems, so, I called HP and they tell me, they told me to install HP Cool Sense and update the last bios.

 

The problem
After executing the update the I was surprised by a boot loop that sowed the following screen:

Jowefra_0-1620837318802.jpeg

 

verification of flashed bios image failed

 

After a reboot, it tries to reflash the BIOS and returns to the exact same screen. So it is stuck in a failed BIOS recovery loop. Essentially it is bricked.

Things I tried

  • 1) Starting with Windows + V, to clear the CMOS
  • 2) Starting with Windows + B, to trigger a recovery
  • 3) Holding the power button for 15 seconds to reset the system
  • 4) Starting with Windows + B and a BIOS recovery USB stick with BIOS F.45 Rev.A (the one that I tried upgrading to)
  • 5) Starting with Windows + B and a BIOS recovery USB stick with BIOS F.35 Rev.A (a downgrade)
  • 6) Starting with Windows + B and a BIOS recovery USB stick with BIOS F.34 Rev.A (a downgrade)
  • 7) Starting with Windows + B and a BIOS recovery USB stick with BIOS F.33 Rev.A (a downgrade)

(I did steps 1, 2, and 3 multiple times between steps 4, 5, 6, and 7)

Results

  • Steps 1, 2, and 3 were no success. (also not in between steps 4, 5, 6, and 7)
  • Step 4 gives flashes the BIOS from the USB (I can see the USB being used because of the flashing light), but ends exactly the same a the original BIOS update, in a BIOS update recovery loop.
  • Steps 5, 6, and 7 ends in the following screen, it looks like a BIOS downgrade is not allowed:

Jowefra_1-1620837318820.jpeg

 

Unable to open BIOS signature file

Possible solution?
Might a new BIOS that validates solve this issue? Can I ask HP for a beta BIOS or something?

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