internet connected but no network access

[Cherubim]

i'm using hp pavilion and operating windows 7 ultimate. I can connect the wi-fi, internet but it notifies me no network access. So anybody could help me? It happens even with my phone modem. Three days before i can connect but now i can't

 

[koolkat77]

Welcome to the forum

*Did you make any changes to your computer during those 3 days?
Try a http://www.sevenforums.com/tutorials/700-system-restore.html to a point you know your connection was working.

Post back for further suggestions.