first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
use BCU. you can permanently disable Absolute lock in BCU.
here's your dmi:
Serial Number: 5CD3439CD2
Product #/SKU: 917G0EC#ABF
CT Number: PRVNR048JIQ3IX
Description: HP EliteBook 650 15.6 inch G10
BuildID: 23WWKRBZ602#SABF#DABF
Feature Byte: 476J6S6b7B7H7M7Q7W7m7saBaEapaqauawbhcAfPguhKhkjhk8mEn7nVpDpVpnpqprqMqz.FQ
MAC Address : D0:AD:08:23:20:EA