Honestly don't know mate. The only suggestions I could think of you said haven't worked. Maybe just use a different browser. Chrome is the best but Firefox ain't too bad either
Right I have literally tryed everything the only way I can think of is too remove Internet Explorer but I can't find it on the list of removable programs within Control Panel?
Thats weird, I've never had any problems with chrome. Can you connect using IE? If you cant connect using IE, you may need to manually add your routers proxy settings.