Resetting a BIOS password on an HP EliteBook 840 G3 is significantly more complex than on standard consumer laptops because the password is stored in non-volatile memory
If the laptop is reported stolen, HP will not help and will flag the serial number. How To Reset Bios Password Hp Elitebook 840 G3
If you contact HP Enterprise Support (not consumer support), and prove ownership (or pay a $50 fee), they can generate a using that PSID. This code is injected via a USB keyboard on the lock screen. Resetting a BIOS password on an HP EliteBook
You provide HP with your laptop’s Serial Number and UUID. They send a file that you place on a FAT32-formatted USB drive. You then boot the laptop while holding Windows + Up Arrow + Down Arrow . Input the Code: one-time unlock code If you
This method involves opening your computer. Make sure you're comfortable with doing so and have a good understanding of handling internal components.