Internet problem on Macbook pro.

Hi,

Month ago I bought a new Macbook Pro, and first everything was beautiful, but few weeks ago the internet start crashing. I'm getting those errors on google chrome -oops google chrome could not find ... , and on safari there is something like " no internet connection ". It's definitely not the fault of my network because on my housemates computers everything is fine. As I'm a mac noob I don't have a clue how to fix this problem, so would appreciate any advices.