Download the utility from community-verified sources like Internet Archive and use a tool like Rufus or the included image tool to create a bootable DOS drive.
The tool includes a "Make All" (shotgun) feature to try multiple keys sequentially for unsupported models. Supported Models List
For HP G-series laptops (G1, G2, etc.) or models with "System Disabled" codes starting with "A", this utility may not work. Some users have success using online code generators for those specific scenarios. Reset forgotten HP laptop bios password A [12345678]
This is a third-party tool. Official HP Support states that they cannot reset BIOS passwords and typically require a motherboard replacement for forgotten credentials.