There are a couple of ways to update your network adapter driver. One is to do it manually, which you should only do if you are at least somewhat familiar working with drivers. Alternatively, you can do it using an automated tool such as Driver Easy or Snappy Driver Installer (SDI):
Either of these solutions will automatically recognize your system and locate the appropriate drivers for you to use with it. We recommend this method because it eliminates the risk of human error, such as downloading or installing the wrong driver on your device.
Once you download SDI and finish installing the updated drivers, restart your computer. Then try reconnecting to the internet, to determine whether this resolved the issue.