Why are breakpoints not working in VS2013?

Question

C++ / C#

VS2013, windows 8.1, application under windows phone 8 on c#
breakpoints do not work - after the start, the circles from red turn to red with white fill
error the breakpoint will not currently be hit. no symbols have been loaded for this document
already wedged and rebuilt until he was blue in
the face, it got to the point that he installed a clean system and studio, the project really launched the old one,
where to dig?

Answer 1

And you were clearly told that you are tracing the application without debugging information. Rebuild in Debug mode.

Answer 2

You are clearly told that no symbols have been loaded. This phrase should be googled. Here is an example solution:
stackoverflow.com/questions/2155930/fixing-the-bre...