ISS7 doesn't open aspx files

I am trying to open my aspx web site on IIS 7 and it opens perfectly the default page (default.aspx), but all the rest aspx pages (in the links, iframe) doesn't open, gives me an error:
Error HTTP 404.0 - Not Found
I was referring to this thread: http://forums.asp.net/t/1946822.aspx?IIS+7+doesn+t+open+aspx+files and this solution: http://www.brainbrushups.com/2013/05/http-error-40417-not-found-in-iis.html but it still won't work. Any help would be greatly appreciated it.

Thanks,
Tufi