Ive had this problem for over two weeks now and can't fix it!
I have Windows 7 and my wireless connection doesnt work. It shows as 'connected' but the internet doesnt work at all, sometimes it works ever so slightly but takes about 10 minutes to load google home page and downloads at about 15bytes/second.
I've tried reinstalling Windows, updating all drivers, changing wireless cards, changing sockets on my mobo, using a USB wireless adapter. I have no anti virus software installed and no firewall.