Hp — Elitebook 840 G7 Bios Password Reset
Disconnecting the main battery or the CMOS (RTC) battery will not erase the security credentials. Method 1: The Official HP Support Route (Recommended)
In extreme cases, the only way to bypass a BIOS lock without HP's help is to physically replace or "flash" the BIOS chip. hp elitebook 840 g7 bios password reset
Method 2: Resetting via HP Client Management Script Library (CMSL) Disconnecting the main battery or the CMOS (RTC)
