Then it needs a professional repair from a shop and a technician that has experience dealing with this. A full program of secondary IC, if more than one, and probably also main bios IC.
The guides on the forum, regarding reinitialization of the CSME FW probably wont be enough as HP system are baddly secure and will not allow writting on the IC(s)… so a programmer is needed.
Modifica bios da flashare con ch341 - BIOS/UEFI Modding / BIOS Modding Requests - Win-Raid Forum