HP Envy Bios installation failure. Stuck with "enter administrator password or power on password"

[davecr90191]

Good morning,
I tried to update my laptop's bios today and it resultes in a failure. Can't really recall tho. On restart, the bios was recovered, and I was prompted to enter my "bios/power-on" password. Even though I enter the correct password, it gives me invalid password. In order to overcome this, I tried using the bios password decoder and entered the number sequence. However, even that didn't work and resetting it by removing the cmos doesn't work either. I tried recovering the bios with Win + B and power key. Even though the bios gets installed and verified, I'm prompted with "enter the bios password" again at boot.

Any help would be greatly appreciated.
Thank you,
Dave.

[DavidPK]

Hi,

Can you post the 'halt code' you receive after 3 incorrect entries - include the prefix ( eg I or i ).

Regards,

DP-K

[davecr90191]

I get the system disabled "window" with the following prompt code: 62980096

[DavidPK]

Hi,

Is the code prefixed with a I or a i ?

Regards,

DP-K

[davecr90191]

Dang, sorry. I forgot to include it. It's prefixed with an 'i'.

[DavidPK · Accepted solution]

Hi,

Reboot and enter  55515439

Regards,

DP-K

[davecr90191]

Thank you. If you don't mind, can I ask how you computed the code? I tried it many times and never worked.

[DavidPK]

Hi,

You're welcome

Halt codes prefixed with a i use a different algorithm to create the hash - I wrote the script for these earlier in the year, but have decided against publication.

All the best,

DP-K

[IT_WinSec]

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@DavidPKwrote:

Halt codes prefixed with a i use a different algorithm to create the hash - I wrote the script for these earlier in the year, but have decided against publication.

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Gray hat alert , gray hat alert. Kudos for that !