If SpareKey isn't an option, you can try generating a master override code using third-party web utilities. This method is common for older HP models but has mixed success with the G6 series. :
: HP has largely transitioned away from this for newer models, often stating that a motherboard replacement is the only official solution for a lost password.
For users locked out of an HP EliteBook 840 G6 Go to product viewer dialog for this item. hp elitebook 840 g6 bios password reset utility work
For business-class devices like the EliteBook, HP Support previously provided a specialized file called to reset passwords.
Enter the wrong password until the laptop displays a "" message along with a 5, 8, or 10-digit code. If SpareKey isn't an option, you can try
If configured, a prompt will appear to press for HP SpareKey Recovery .
If the site generates a code, enter it into the password field on your EliteBook to unlock the BIOS. 3. HP Support and the SMC.bin File For users locked out of an HP EliteBook
If you have forgotten your administrator password, there is from HP that will instantly clear it for security reasons. However, several proven methods—ranging from built-in recovery tools to hardware-based solutions—may work depending on your specific setup. 1. Built-in Utility: HP SpareKey HP EliteBook 840 G6