If they provide an SMC.bin file, you must save it to a blank USB drive (FAT32 format).
For modern HP laptops like the , resetting a BIOS password is more complex than on older models. Traditional methods like removing the CMOS battery or using master recovery codes often do not work because the password is encrypted and stored on a non-volatile security chip on the motherboard. Official Recovery Options hp elitebook 840 g7 bios password reset
Search GitHub for hp bios password removal script . Several Python scripts exist for the 840 G7 specifically. They automate finding the right offset. If they provide an SMC