What does this mean: "Wi-Fi has the self-assigned IP address...& will not be able to connect to the Internet"?
So there are two things happening when a wifi device wants to use "internet". First it has to join the wifi network using an AP (access point) If there is a password like WPA that needs to be supplied. Next the device needs to get an IP address. That information comes from a router. It is not always necessarily true that the router and AP are the same piece of equipment. If the IP address acquisition (typically via DHCP) fails or times out the device will assign itself an IP from 169.254.X.X. However this IP can never talk to the Internet and the device knows that so that's why the message is provided. Sometimes this is simply resolved via a reboot of the router, but it could also be a hardware failure, especially if the AP and router are two separate devices.