Thnak you very much. Just for others that could have simnilar problem:
The issue was because: I just copien, using SQL tools, the ASP.NET ZERO tables to the Database I wanted to work with, and changed the ConnectionString. It didn't work!
I solved the problem in this way:
I just changed the ConnectionString in Web.Config to my new Database (already existant) and I made the process of Update-Database using EntityFramework. Now works very fine.
Thanks again.
I have change the connection string Database = "b5672t897628888" after recompiling and execute in the body of home page I have 500 Error!
logo and menus are ok. is the body having the problem.