After three incorrect password attempts, press when prompted for HP SpareKey Recovery .
file used to unlock the BIOS, but they typically require proof of ownership: Requirements: how to remove bios password hp elitebook 840 g1
to manually "flash" a clean BIOS file onto the chip. This requires disassembling the laptop and potentially using a clip or soldering to connect to the BIOS chip. Reset HP EliteBook 840 G1 BIOS Password - FAQ - JustAnswer After three incorrect password attempts, press when prompted