This is a deliberate security decision by HP. If a BIOS password could be easily cleared by opening the chassis and disconnecting a battery, it would defeat the purpose of securing a portable device like a laptop. Consequently, the methods that work for resetting a forgotten password are necessarily more advanced.
: HP states that if the BIOS password is lost, the only official solution is to replace the system board (motherboard) , which usually incurs significant out-of-warranty costs. SMC.bin Discontinued hp zbook 15 g5 bios password reset
Hold down the keys simultaneously, then press the Power button. This is a deliberate security decision by HP
Would you like a version with step-by-step technical instructions, or a different tone (e.g., mystery, comedy, or IT field manual)? : HP states that if the BIOS password
However, if you are the legitimate owner, there are several methods to bypass or reset this password.
The most common method for HP enterprise laptops is triggering a "System Disabled" code, which can be converted into a master password.
Clamp the programmer clip onto the chip, matching Pin 1 (designated by a small dimple on the chip) with the red wire on the clip.