These websites (bios-pw.org, etc.) ask for the “System Disabled” number—usually an 8-digit code displayed on the lock screen. You type it in, and the site spits out a series of override passwords.
Some recent HP policies state they no longer provide these files and may require a full system board replacement for forgotten passwords. How To Reset Bios Password Hp Elitebook 840 G3
On another device, go to an unlock tool site such as BIOS Master Password Generator or BIOS Spark. Enter your challenge code to generate an unlock key. These websites (bios-pw