Obtain the specific WanDrv v6.3 (or latest) package for Windows 8/8.1 64-bit. Extract the .zip or .rar file to a folder using a tool like WinRAR.

: The tool will automatically detect your hardware components (Motherboard, GPU, Audio, Network, etc.). Select Drivers :

Unlike many online updaters, it is designed to work without an internet connection.

, meaning it contains a massive database of drivers within the file itself so you can install them without an internet connection. Snappy Driver Installer (SDI)