For the HP Z240 Workstation, you can find the official BIOS .bin file by downloading the BIOS update executable from the HP Support website and extracting it. For example, the current version is available via the file sp154352.exe . How to Obtain and Use the .bin File
The most reliable way to obtain the BIN file is through the Official HP Support Page . hp z240 bios bin file link
If you need the file, do not rely on a blind link. Go to reputable repair forums (like Badcaps.net or Vinafix) and request the file, providing your motherboard part number. If you have a working PC, it is actually safer to dump your own BIOS before you start messing with it. Long boot times (hangs on HP logo for 60+ seconds)