Alright so a couple days ago I went out and bought myself a Linksys WRT160N using a broadband connection. I set it all up and let it auto-configure since I'm not all that technology savvy. It worked well up to yesterday until I tried to open Firefox (and IE too, I have both) and got a "Cannot Open Page" message. Weird, thought I, as I tried to open up other websites with no success. I open up my Linksys EasyLink Advisor which says my connection is fine, I tell it to repair anyway and still the problem stayed. This is when I went into my Network and Sharing Center and told it to diagnose itself. It tells me that there is a problem with my DNS configuration. I haven't changed ANY of my router settins and have the TCP/IP both the IP and DNS settings set to "Obtain [IP/DNS] automatically." Why did it just stop working all of a sudden and how can I fix it?

Login to the router, goto the Administration>Diagnostics page. Try to ping e.g. google.com. If it works, next try a Traceroute to google.com Report back the result. Please send a reply, if you solved the problem !!!

You can try using different DNS servers, in the automatically obtain dns set it to specify your own or whaever it says, and add these 2 server ips in there, 208.67.222.222 208.67.220.220 Also there is a good chace that the firmware is causing the problems, try updating it.

The OP didn't configure the router! There is no firmware problem. Dhcp wasn't configured to give him a dns server. You don't point someone to dns servers that may or may not be local or best for their locale. The OP should be using his ISP's listed dns servers. Morex123 you don't have to be a computer wiz to follow the routers setup manual. Just go slow and do page by page. It will start out asking for information you need to configure the router. This is where you call your isp and ask them for that information. Then write those setting down in the manual. You should also check your software firewalls since they can block access if you have not configured them.

How come there is a 19 page thread with the same router and sam eproblem and they are all poiting to my answer?

Probably because they don't know any better ;)