This sounds like the typical "success story" of a technician or HP user troubleshooting a system failure where the HP PC Hardware Diagnostics UEFI version 1.6.1.0 saved the day over older, more limited BIOS-based tools.
Older versions often took 30–45 seconds to load the diagnostic environment. Version 1610 reduces this to under 12 seconds on NVMe-equipped HP EliteBooks and ZBooks. This is because the new UEFI driver stack is optimized for PCIe Gen 4 and Gen 5 storage devices. For IT departments running daily pre-boot tests, this time saving adds up. hp pc hardware diagnostics uefi version 1610 bios better
Comparison to BIOS