Hi,

Chances are the network connection has just been corrupted and needs to be deleted and then rebuilt.  Here is a link to our Networking and Wireless Support Center.  It has articles that describe how to troubleshoot wireless issues and you should be able to find a resolution to your problem. 

Here is a video that also helps resolve wireless issues, if, like me, you find it easier to follow video tutorials instead of written ones. 

Please do come back after you've checked out those online support articles and let us know what you did to resolve the issue so that others can easily locate a fix if they have the same issues.  if you aren't able to resolve the problem using that material please let us know that too, and we'll see what we can do to help you further.

Todd