The official "Full" version of DriverPack is traditionally a massive ISO file (often exceeding 20GB to 40GB) containing thousands of drivers for graphics cards, network adapters, sound cards, and chipsets. It is intended for system administrators who need to configure computers without an internet connection.
Once you have selected the drivers you need (e.g., Network, Audio, Video), click Install. The process will create a Windows System Restore Point before beginning (a safety net in case something goes wrong). After the installation finishes, your computer will reboot.