If you or the original owner set up when the laptop was first configured, you are in luck. This feature allows you to recover your password by answering three personal questions.

Turn on the laptop and press repeatedly to enter the BIOS Setup.

To provide more specific steps, I'd need to know if you can still boot into Windows or if the laptop is completely locked at the start.

Plug it into the ZBook, hold , and power it on.

If successful, the BIOS will grant access and allow you to set a new password. Method 2: Contacting HP Support (The Official Route)