. Unlike legacy laptops, modern EliteBooks store passwords in non-volatile memory that isn't cleared by simply removing the CMOS battery. Official HP Stance and Policy
If you cannot remember your SpareKey answers, your most reliable options are to contact (which often requires a motherboard replacement if under warranty) or seek a professional repair shop capable of EEPROM reprogramming .
However, starting with the G4 and G5 series—and continuing through the —HP moved the BIOS password storage into a more secure, non-volatile chip that is often integrated with the TPM (Trusted Platform Module) .