*i.imgur.com/gqsXu.pngProblem is with your laptop not with Website.. tell us which browsers you tried and what errors you get..
IF IT ALL HAPPENED IN SUDDEN !then do what clmlbx said..if u can't open some particular website change the dns in router's advance setting.....D-Link Dir-615
And the website used to open. All of a sudden it doesn't
ipconfig /flushdns
ipconfig /renew
tracert <yourwebaddress>