What is the problem with my wireless network?

Contact your service provider, same thing happend with my sisters internet. she phoned them up, and they sorted it.
http://uk.answers.yahoo.com/question/index?qid=20081022044714AA57wAL

Windows 7 wireless network problem.?

reset the internet options, and check to seee if you got an ip address if not, ipconfig /renew.
http://uk.answers.yahoo.com/question/index?qid=20110216104625AAKAXac

try reinstalling drivers of wireless adapter in sony ...or maybe problems with web browser and some network settingsalso check level of security in your laptop opening control panel
http://uk.answers.yahoo.com/question/index?qid=20121225110756AA0NAJU

If you have tried in the past, it's probably remembered the network name - what you describe is the screen to change settings on a 'known' network.Go to Settings, WiFi, select your network name and... Read More »
http://uk.answers.yahoo.com/question/index?qid=20130125055945AAAgBie

It really depends on your preferences. Wired is most definitely preferred for gaming but it is not a necessity. Your options are to buy a very long cable (could be expensive and irritating), a powe... Read More »
http://uk.answers.yahoo.com/question/index?qid=20121119101738AAzIwz4