On the HP Compaq 8200 Elite, look for a small 8-pin chip near the SATA ports or the PCIe slot. It says:
You must use Intel’s Flash Image Tool (FIT) and ME Analyzer to integrate your original motherboard’s GbE region and MAC address into the new BIN. This is an advanced process requiring your original backup. hp compaq 8200 elite bios bin file
You can obtain the official BIOS files directly from the HP Software and Driver Downloads page . On the HP Compaq 8200 Elite, look for