If your PC doesn't have internet because the driver is missing, download the file on a different computer or a smartphone and transfer it via USB cable or thumb drive.

If this guide helped you, consider bookmarking the official driver page for your specific chipset. And remember: if a website asks you to “scan your PC for free” before giving you a driver, close the tab immediately.

Once you have the VID/PID, download the corresponding 64-bit Windows 7 driver from the official manufacturer:

Here is a review and guide on what to expect when downloading this for . Review: 802.11n WLAN Generic Driver