There is one thing you should always do first: don’t trust the Windows “limited access” error message, especially if you connected and disconnected several times or if your WiFi connection is unstable. Windows sometimes gets confused. Open a web browser and see if your Internet connection really doesn’t work. If it does, don’t bother about the limited access. Windows occasionally detects its wrong assessment of your network status and sets the message back to “Internet access” after you have already downloaded gigs of data from the Internet.
If your browser can’t access the Internet, read on.