Troubleshooting common issues
The safest way is to download the official BIOS update executable from HP’s drivers page. You can "extract" the .bin file from this package using a tool like 7-Zip or WinRAR. hp compaq dc7900 bios bin file link
If you are looking for the actual file for your own repair, I can help you . A modified version (to support newer CPUs or NVMe)? Instructions on how to use a USB programmer to flash it? Troubleshooting common issues The safest way is to