Installing a network adapter driver without an active internet connection is a common hurdle, often occurring after a fresh Windows installation or a major system crash. Since you can't go online to fix the very tool that gets you online, you must use an "offline bridge" method.
Here’s a concise step-by-step guide to install a network adapter driver when you have no internet access on the target computer.
Always keep a copy of your network drivers on a USB stick for emergencies.
On working PC, download driver package manually, then copy entire folder. On offline PC, use:
The system will scan the folder, match the Hardware ID with the .inf file, and install the driver. Once completed, the Device Manager entry will change to the correct name, and the internet connection should become active.

