Why my mesh turns black? I'm new here.

My problem is.... my mesh turns black, I don't know why also when I create a new object like a cube it turns black as well, I recalculated the normals and nothing happened, please help me?

What can I do for solving my problem?

Thanks for your help

Screenshot 


My file
Make sure that the light is set in the correct direction.



Also, you are working in texture mode, switching to solid mode might be easier to work the model until you are ready to add a texture to it.