If the drivers are in an executable format, the user simply runs the setup file after the adapter has been uninstalled and rebooted. If the drivers are raw files (inf), the user must go through the "Update Driver Software" process. By right-clicking the adapter (listed as an "Unknown Device" or "Ethernet Controller" with a yellow exclamation mark), selecting "Update Driver Software," and choosing "Browse my computer for driver software," the user can point the wizard to the folder containing the downloaded files. This ensures that the system is running the specific, manufacturer-tailored software rather than a generic Windows driver.
If the automatic scan doesn't work or your adapter is missing entirely, you may need to install the driver manually. how to reinstall network adapter windows 7