Online Backup Linux Dell Mini Linux Internet Pages Wont Load?

Dell Mini Linux internet pages wont load? - online backup linux

I have in my Dell mini Linux / Ubuntu

The laptop is only a few months and only began last week. Two days ago I got my wifi connected. After only one day of using the Internet, suddenly the loading of web pages on my steps. He says the network is connected to link (100%) and is the same, when I go to my router. However, if you try to open a line (including Google), the page says "address not found". I write everything right, and that is what happens to all websites that are trying to start.

I do not know my way around this team very easily because I am so, Windows uses. I have this laptop as a backup is interrupted just for fun and my laptop to normal size.

Can someone tell me how to solve this problem?

Thank you very much:)