I am using new Dell Inspiron N5110 laptop and having problem with the wireless connection.  the laptop works fine with Etharnet cable.  I have an old Dell Inspiron 1501 laptop which works really well with WiFi using same Router.

I have search lots of topics on Dell support website and also contact the broadband provider as well but according to them the fault is with the laptop and not with their connection line.

Please suggest me the solution for this problem.