Open the extracted folder. Look for a file matching your motherboard's ROM family (often starting with N76 or similar for this generation).
Open the extracted folder. Look for a file with a .bin extension or a large file without an extension that matches the size of your BIOS chip (usually 8MB or 16MB).
Use tools like Asurada , NeoProgrammer , or CH341A Programmer v1.34 on your working PC. Step-by-Step Hardware Flashing Guide
Before resorting to hardware tools, try HP's built-in emergency recovery:
Press and hold the (or Windows Key + V on some revisions) simultaneously.