To update your system’s BIOS, first check your motherboard or laptop manufacturer’s website for the latest BIOS version and download it. Carefully read their instructions. Usually, you’ll need to copy the BIOS file to a USB drive, restart your PC, and enter the BIOS/UEFI menu by pressing a key like F2 or DEL at startup. Use the built-in BIOS update tool to select the file and start the update. Don’t turn off your PC during the process. Restart when done, and your BIOS will be updated.