things to try
try a different browser to see if it is a browser issue or something else. try deleting the browser temporary internet files and cookies, try a power cycle on the router and modem, unplug them for a 20 count then power them back up. sometimes they may lose connection on one computer for whatever reason when on a network. try in safemode with network to see if some utility is blocking you.
Gateway computer with Windows 7, Recognizes the wireless routher-"connected" router is broadcasting (Im writing this on another computer using the same router network ) but won't load any content- "This page can't be displayed" last known working: last night, watching Netflix, and just popped off. Thoughts/suggestions? Thanks

Chowhound
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GameFAQs
GameSpot
Giant Bomb
TechRepublic