HP Pro/Elitebook BIOS Reset Utility
For best  esults, run HP 'Probook Unlock.exe' from USB Thumbrive.
The directory structure must stay the same.

[Usage Overview]

Use included USB Image Tool software to restore included image to USB
Boot system to USB to load DOS environment.  This will automatically collect system information and save it to USB. You may then type 'DOS' and press Enter to load the DOS based tools.  Follow the onscreen instructions.  Running option 5 'Shotgun' is the fastest most effective method, but you may opt to choose your specific unit.

[Success]

After clearing password, pay attention to the output, it may instruct you that a 'Second' run is required to fully clear pass.   The system must be rebooted.  You may be prompted to press 'F1' to reset 'TPM' and again for 'Fingerprint' reader.  If after reboot you get a white screen, 'System Board Error', load DOS tools and choose the option to Reprogram.  Follow the questions.

[Not supported Error]

If you find your laptop is not supported, run  'HP BIOS Unlock.exe' from within Windows, directly from the USB. When running 'HP BIOS Unlock.exe' from within windows, it will try to load system information automatically.  At this point you can click 'Make All' to create all keys.  This is the same as 'shotgun' from DOS, but does offer slightly better support for more units.  Once all keys have been created (this can take a few moments as it's writing data to USB), a notification will display information.  Reboot your laptop to USB again and now simply type 'all' and press Enter to run through all the keys just created from windows.
If your machine still displays this error, your laptop may have an unsupported motherboard.

[BIOS does not support this feature]

If you see this error, you need to force update your BIOS.  I have included files to support many models already, but not all.  to force BIOS update, power off laptop.  With USB inserted into laptop, hold 'Windows Key' + 'B' and press Power.  Hold the keys for a moment, and the Caps lock light should flash. Release the keys, and you should see brief activity on USB.  If your timing is correct, unit will reboot after no more than 2 minutes.  The screen will be all black during this time.  After a successful flash, the laptop will reboot and will display notification that the process was successful.
(Note: Updating does NOT remove passwords, just allows us to remove passwords)

If you BIOS will not update, please contact the author for assistance.  jhayton@gmail.com


[LOCKED BOOT ORDER]
If your BIOS has a locked set boot order, and will only boot to HDD, 
you need to take a laptop sata drive and use an external adapter and 
make it dos bootable on another host machine also placing the files 
on this drive, then rep