Hi Shepard,
The issue could be caused if there is a miss match in the IP address configuration.
Follow the method below:
Method 1:
Lots of people use networks, but most people don’t have the time or inclination to become networking experts. Instead, we often rely on someone more knowledgeable to troubleshoot our network problems. But what if you don’t have someone available to help you? The Network troubleshooter in Windows 7 provides a way for anyone to diagnose and repair network problems.
Using the Network troubleshooter in Windows 7:
http://windows.microsoft.com/en-US/windows7/Using-the-Network-troubleshooter-in-Windows-7
Troubleshooting connection problems can be a challenge because there are so many possible causes. If your computer is having problems connecting to the Internet, or to other computers on a network, try using one of the networking troubleshooters to fix the problem.
Open networking troubleshooters:
http://windows.microsoft.com/en-IN/windows7/Open-networking-troubleshooters
Method 2:
One of the components of the Internet connection on your computer is a built-in set of instructions called TCP/IP. TCP/IP can sometimes become damaged or corrupted. If you cannot connect to the Internet and you have tried all other methods to resolve the problem, TCP/IP might be causing it.
How to reset Internet Protocol (TCP/IP):
http://support.microsoft.com/kb/299357
Method 3:
When you run the Network troubleshooter, any problem found, along with any solution, is displayed in the Network troubleshooter dialog box. If more detailed or technical information about the problem and potential solutions is available, it's saved in one or more event logs. Network administrators and technical support personnel can use the information in the event logs to analyze connectivity problems or help implement the solutions.
Use Network troubleshooter event logs to solve network problems:
For reference:
Wired and wireless network problems:
Wireless networking: frequently asked questions:
http://windows.microsoft.com/en-US/windows7/Wireless-networking-frequently-asked-questions
If you need further assistance on this particular issue, let us know and we will be glad to assist you.