Did you set up security questions when you first configured the laptop? If so, HP has a built-in feature called SpareKey.
This works on <10% of 840 G3 units. HP sealed this vulnerability in firmware version N78 Ver. 01.30 and later. How To Reset Bios Password Hp Elitebook 840 G3
You can initiate a request through the HP Support Contact Page . Did you set up security questions when you
If you are locked out, do not panic. Below are the only working methods to reset the BIOS password on an HP EliteBook 840 G3, ranging from free software workarounds to hardware-level solutions. HP sealed this vulnerability in firmware version N78 Ver
To reset the BIOS password on an , you must use official software recovery methods or advanced hardware reprogramming, as simply removing the CMOS battery will not clear the password on this business-class model. 1. Use HP SpareKey (If Pre-Configured)