I can't connect to some websites

NajNad Posts 1 Registration date Monday May 13, 2013 Status Member Last seen May 13, 2013 - May 13, 2013 at 05:22 AM

my netbook can't connect to seome websites like google, facebook.twitter,yahoo so far those are the sites that i can't connect to. My tablet and my pc can connect to those sites only my netbook can't connect. I tried to use IE but it can't connect either. Please help my OS is Win 7