BoxInformatica,
It's still possible the driver is somewhere on the support site:
1. What is the HP Pavilion model number?
2. What is the exact driver you're looking for?
My questions relate to whether the driver is for an HP component or for am extra non-HP device. HP driver support seems quite complete for BIOS, chipset, firmware, and includes the drivers for third-party RAID controllers such as LSI if HP supplied the component in a new system. In my experience, the BIOS versions include latest and some level of previous versions and in some cases diferent versions made as ,EXE or for flash drive installation.
Did you see the page where you can dowload a PDF of the user and / or service manuals?
You English is very good.
Cheers,
BambiBoom