What's wrong with my router DLink.?

So this is what happened. I have Comcast and the modem does not have WiFi built in. I have a wifi Router for about 1 year and everything worked perfectly. I moved houses and connected the internet to my new house. For about 2 weeks everything worked fine. 3 days ago my internet was disconnected for no reason. comcast fixed it by connecting the modem directly to the computer however I still needed WiFi. so I connected the router but here was the problem. Nothing worked when I connected it. This includes the computer and WiFi. I tried to go to its settings ( 191.xx.x.x something like that) . What came up was a page not found just like before. What happened.?

My guess is that something was reset when you lost connectivity. Call Comcast to get their support team to help you resolve it.

Try 192.168.1.1 and make sure the router is set to automatically select the IP address then make the modem output connect to the router input via an Ethernet cable. If 192.168.1.1 doesn't get you into the admin for the router, do the reset procedure.