Right-click on Setup.exe (or Install.exe ) and select "Run as administrator." This is required because drivers write to the System32 protected folder.
Insufficient permissions or antivirus blocking the installer. Fix:
: Some RTK NIC installers are designed to allow driver installation without an active internet connection, which is critical for restoring a lost network connection.
Never use drivers pre-loaded on a device or from unofficial links. Download them directly from the official manufacturer: Realtek Official Download Center Dell Support (for Dell laptops/adapters) HP Support (for HP devices) Use Device Manager: Right-click the button, select Device Manager , find your network adapter, and click Update driver to let Windows find the verified version automatically. Microsoft Learn
