Broadband Connection Problem.
I am in the U.K. My ISP is BT and I have a HomeHub4 with BT Infinity.
Suddenly my MacBook Air will not connect to my Hub4 router. The message is "Wi-Fi 2 (my HomeHub) does not have an IP address and cannot connect to the Internet."
My iPhone 6 Plus connects with no problems so I have temporarily connected my MacBook to the internet using my iPhone as a personal hotspot and it works well. Even my Devolo Homeplugs connect easily.
I have rebooted my router and my MacBook and checked in Network Preferences but I still cannot directly connect my MBA to my HomeHub.
Any ideas?
MacBook Air, OS X Yosemite (10.10.3)