If your PC is missing network drivers, you can’t access the internet. In this case, you can’t search and download the network drivers using this PC. There are 2 ways you can use to download and install the network driver. For both ways, another PC with the network is required.
Method 1: Download and Install the Driver from manufacturer
On a PC with an internet connection, you can go to the PC manufacturer’s website or the network card manufacturer’s website to check for and download the correct driver. If you are using a brand computer, it is recommended that you go to the PC manufacturer’s website first, as they may customize the driver. Download the driver to an external drive like a USB flash drive, then transfer the driver to the PC without a network. The downloaded driver will always be in self-install format. You just need to double-click on the setup file to install the driver.
Before you get started, ensure that you know the PC model, the network card model, and the specific operating system that you are using.
Method 2: Download the Driver Using Driver Easy
Driver Easy is a driver update tool that can scan your computer to detect all problem drivers in several seconds and then give you new drivers instantly. It has an Offline Scan feature which allows you to download and install network drivers quickly and easily even without a network connection. With an easy-to-use interface, after installing Driver Easy, you can follow the on-screen instructions to use the Offline Scan feature easily.
To use the Offline Scan feature:
Step 1: Perform an offline scan on the computer without Internet access
1) Install Driver Easy on the offline computer. Then open Driver Easy, and click Tools.

2) Click Offline Scan from the left pane. Then select STEP 1.

3) In the pop-up window, select a location to save your offline scan result, then click Save.

4) Click Go to file when the offline scan file has been saved.

5) In the pop-up folder, save the offline scan file to an external hard drive, then transfer it to another computer that has Internet access.

Step 2: Upload the offline scan file on the computer with Internet access
1) Download and install Driver Easy.
2) Run Driver Easy and click Tools.

3) Click Offline Scan, then select STEP 2.

4) In the pop-up window, find your offline scan file, then click on it and select Open.

5) Click Download or Download All to start downloading your network drivers.

6) Choose where you want to save your network drivers, then click OK.

7) Wait for the download process to complete.

Once the download is complete, save the network driver file to an external hard drive, then transfer it to the offline computer. After that, follow these instructions to install the driver.