On older HP models, technicians often used generic files or "shotgun" utility programs to reset the CMOS. However, the HP EliteBook 840 G6 stores its BIOS and security configuration in a way that is resistant to these legacy tools.
This model features HP Sure Start Gen5 , which constantly monitors the BIOS. If it detects unauthorized changes (like those attempted by some "reset utilities"), it can automatically restore the BIOS to a safe, previous state, effectively blocking the bypass. Methods for Resetting the Password 1. Official HP Support (The Recommended Way)
A series of personal questions that allow you to reset the password.
Security credentials are often tied directly to the Trusted Platform Module (TPM) chip.
Unlike older laptops where a simple "backdoor" code or a "repack" utility could easily clear a supervisor password, the (and most HP models from the 800 G4 generation onward) utilizes a more sophisticated security architecture. The Evolution of HP BIOS Security
If the password was set by an IT department, check if they configured:
HP used to provide a "SpareKey" or a specific SMC.bin file tailored to your UUID and Serial Number. However, for newer models like the G6, they often require the motherboard to be replaced if the password is forgotten and no recovery options were set. 2. Hardware SPI Programming
The BIOS information is stored on a SPI Flash chip . Simply "repacking" a utility or running a DOS-based tool rarely works because the chip requires a direct hardware rewrite if the password is lost.
Using "patcher" software to clean the password hex code from the dump. Writing the "cleaned" file back to the chip.