Can no longer access the web over wi-fi.

I have a problem with a Vostro 360 touch-screen computer with 64bit Win7 professional, IE 9 and Live mail 2011 installed.

This normally conects to the router wirelessly for e-mail and internet, but suddenly stopped working correctly the other day.

It can still reach the google search page and make searches, but then can't follow any of the links of the results. Other web addresses don't connects at all, just an endlessly spinning of the timer that eventually returns a 'cannot display the webpage' error.

Windows live mail, (which is setup for IMAP), connects and downloads the message headers, but no longer downloads the body of the e-mails, and eventually times out with a non-response from the mail server error message.

However, other computers on the same router are not having any problems and are visible in the Vostro's File Explorer and shared files on those other computers can be seen and opened. Using the command prompt, pings to web addresses are resolved to an IP number and receive returns.

I connected the router directly with an ethernet cable and it worked fine, web and e-mail downloaded and displayed with no problem, but remove the cable and it's back to the above. I booted into safe mode with network and the exact same problems occured.

I've tried using the IE9 (No addon) version, i've disabled the Norton firewall and anti-virus, I've deleted the internet browser's temp files and history and reset the IE9 settings. Using the elevated command prompt, i've flushed the dns, and reset both the ip and winsock.

Is there anything else I can try?