The majority of this process is done for you by the operating system, however, you do need to tell it to update.
Click "Device Manager." This will be located on either the upper-left side or on a tab at the top of the "Properties" window, depending on your version of Windows.
This will allow you to assess your Driver needs without any commitment.
Most routers have a built-in update checker, which may or may not perform the entire process automatically.
If you're using an Apple Air Port router, you can use the Air Port Utility program to check for updates.
There are various types of Ethernet Controller Drivers, such as Network Controller Card Drivers and other Hardware Drivers.
If you’re having issues with any of your Drivers it can be relatively easy to figure out what the problem is through some troubleshooting.
If your Drivers are updated and you’re still having issues, check the Windows 7 Device Manager.