Read the current HEX code of the chip on a separate computer, use specialized software to locate the password hash, clear it, and write the patched file back to the chip.
If you set up your laptop yourself, you may have enabled HP SpareKey during the initial setup. This feature allows you to recover your password by answering personal security questions. Step-by-Step Execution:
If all software methods fail, the final option is a hardware intervention. This requires soldering skills and specialized electronics equipment.
A 5-digit to 8-digit code or a "halt code" will appear on the screen.
The tool will generate a series of potential master passwords. Try typing them into your HP ProBook 440 G6. Method 4: Hardware EEPROM Flashing (Advanced)
When prompted for the password, type anything and press Enter.