Da0padmb8f0 | Rev F Bios
If software recovery methods (like the Windows+Key+B recovery combo) fail, hardware programming is required. This involves removing the BIOS file, correcting it, and rewriting it to the chip.
Press and hold the for 2-3 seconds, then release it while continuing to hold the key combo. Wait for the "HP BIOS Update" screen. 2. USB Recovery da0padmb8f0 rev f bios