Windows 7: Windows 7 network issue connected but no internet access

i have just installed a clean copy of windows 7 home after several weeks of tinkering with ipconfigs and renews and dns flush ipv4 all the normal solutions but nothing seemed to work so i formated the whole comp everydrive and still have the same issue i can connect to several diffrent networks and they all connect but no internet access just the exclamtion inside the yellow triangle in the task bar everytime i have also tried a diffrent network adapter another thing is my phone will log onto the wifi just fine any sugggestions its drivimg me insane thank you in advanced