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Yesterday my Mac started having issues with internet connection and I can't sort out what's wrong. My computer has been working fine with the current router and network for a week, and suddenly yesterday the internet just went out. I hoped that rebooting and giving it some time would resolve the issues, but that didn't work. I have restarted the router and my computer to no avail; I have gone through diagnostics, which says that the AirPort, AirPort Settings, and ISP are functioning, but there's a yellow light next to Network Settings and the Internet and Server have failed; I have tried manually entering the IPv4 under Advanced Network Settings, but then although the Network Settings has a green light, the IP address fails; I have tried Renew DHCP Lease and that didn't do anything -- is there something else I can do? My roommate's PC is working fine (that's what I'm using to connect right now), but I really need to get my computer up and running. It currently says "Alert: No Internet Connection" in the AirPort and is telling me that the Self-Assigned IP will not be able to connect to the internet (but I can't find an IP that will connect!) Does anyone know what the next step is? Thanks!
Ok, I doubt anyone has even read this post, but after about an hour and a half of fidgeting with everything I could, finally deciding to post on this forum, and giving up and turning my computer off, somehow the internet came back. I turned my Mac back on because I wanted to see if there was any chance that I could plug a cable in and use ethernet, and suddenly the AirPort was working again. So for anyone who has the same problem, apparently a bit of reconfiguring and a lot of patience are the tricks.