Testing Wordpress from Mac to Windows


I designed a theme for Wordpress under Mac OS X using Mamp as server.
I decided to test it under Windows. I installed Xampp and copied the whole original Wordpress folder.
I created in Xampp a Database with the same name as in Mamp.
When I activated my theme in Windows the navigation menu is different. In the Dashboard I found that my original menu settings were not saved. Also the original posts do not show.
Please, could you help me?