If it can get to the router, unless you have MAC addressing enabled on the router and your device is not in the approved list, then I would look at the ipconfig output for obvious problems.
If there aren't any apparent issues, then I would try using a static DNS address. To do that go to your network control panel, change adapter settings, choose the wireless adapter and right click, select properties, networking tab, highlight Internet Protocol Version 4, click Properties button, check the button for "Use the following DNS server address" and enter 8.8.8.8 and 8.8.4.4 in the two boxes -- that is the Google public DNS servers.