If software methods fail, you can try to clear the BIOS settings by discharging the motherboard's power: : Disconnect the AC adapter.
Answer the three personal identification questions you configured during setup. If correct, you will be granted access to clear the password. Method 2: Contact HP Support (Official) HP can provide a specialized
Removing a BIOS password on an HP EliteBook 840 G1 is difficult because modern HP business laptops store passwords in non-volatile memory (EEPROM), meaning standard methods like removing the CMOS battery often do not work.
