HP DV7-4290US LX3 DAOLX3MB8F0 REV-F BIOS + EC(Prime Tech)
PRIME TECH: We are believing in reviving the technology and making minimum electronics waste, as our field is computers and laptops we are here trying to provide as much stuff as possible for free to make our contribution. At this platform you can download confirm and tested bios files, schematics and other relative material to make it possible to repair.
Here you can download bios and other stuff for free, without any registration required.
Bios which is (basic input out system) and is advanced into UEFI (unified extensible firmware interface),is program which contains communication protocols between different ICs and also contains hardware initialization processes to safely start a computer system, it also manages power flow to different motherboard parts and senses temperature and detects peripherals. It runs when we plug the power in till we are running different task in our OS. It continuously provides information about hardware to OS as well. This is a program which connects hardware to hardware and to software as well. This is why it is also called “firmware”.
Always remember! First Backup your old Bios chip and save it at (USB or Hard drive) then copy the downloaded Bios bin file into the Bios chip.Some time the machine states changed after programming bios chip.it is a good practice to save your self.
Download bios bin file from below link !