I have been experiencing some problems with my 777, i load the plane, set up the FMS, payload, furl, MCP, Save all my settings and once i try to load, its all gone, nothing was saved. Some flights i even saved flying with AP and all, configured, level flight and once i load, there is nothing on FMS, no AP, and of course m the plane starts to dive. 

Anyone has any tips, i am pretty dumb with computers 

thanks

P3D/FSX?  Regardless, you need to be running the simulator with admin rights.  Not doing so could prevent user data from being saved.