Q: Can I use a third-party utility to reset the BIOS password on my HP EliteBook 840 G6? A: Yes, you can use a third-party utility to reset the BIOS password on your HP EliteBook 840 G6, but use them at your own risk.
Once you have the hash, you must use an online service or a local compute script to generate a System Disable Code . In 2014-2018, bios-pw.org worked. For the 2019+ EliteBook G6, the algorithm changed. You now need paid paid services like Dogbert's HP Unlocker (custom binary) or HP Unlock Utility .
Press the for 2–3 seconds and release it while continuing to hold the key combination.