For a user-set password or a newer BIOS, there is no free method for the ZBook 15 G5. Your only options are:
Before attempting any resets:
The HP ZBook 15 G5 is a high-performance mobile workstation that employs robust security measures, including BIOS-level passwords (Power-On Password, Admin Password, and DriveLock). When these passwords are lost or forgotten, the device becomes effectively locked. HP’s official solution requires a service center with proof of ownership, often incurring cost. This paper examines legitimate, no-cost methods to reset the BIOS password on a ZBook 15 G5, focusing on hardware-level resets and publicly available tools. hp zbook 15 g5 bios password reset free
Success Rate: Low (only works if the password is "user" level and admin rights are available). But try it—it costs nothing and takes 5 minutes.
If the previous owner or your IT department set up the HP SpareKey feature, you can reset the password without spending money. For a user-set password or a newer BIOS,
How it works: If you enter the wrong password three times, the system should generate a "System Disabled" code or prompt you to use the SpareKey recovery process. This usually involves answering security questions set up previously.
Limitations: If you do not see a prompt for SpareKey or do not know the answers, this method is unavailable. The HP ZBook 15 G5 is a high-performance
Some HP ZBooks have a password reset jumper (two solder pads) on the motherboard. On ZBook 15 G5:
Many ZBook 15 G5 units do not have this jumper (HP removed it in later revisions). Check board revision: G5 Rev 1.0 often has it; Rev 2.0+ lacks it.
If the code generation fails, the next free option involves hardware manipulation. Warning: This can void warranties or permanently damage your motherboard. Perform at your own risk.
Some HP ZBook 15 G5 motherboards have a password reset jumper (often labeled PSWD or PWD). On the G5, this is usually near the RAM slots or under a small plastic cover.