If your PC is "bricked" (no display, no POST), you must use an external hardware programmer to write the file directly to the BIOS chip. Win-Raid Forum [Help Request] HP Pro 3500 MT BIOS Recovery
The HP Pro 3500 MT uses specific motherboard revisions (often the or H-Cupertino-H61 ). It is critical to match the .BIN file to your specific motherboard SSID. hp pro 3500 series mt bios bin file fix