i have a problem with the selection outlines

[mero5CFC]

when i try to make a shape i can't see what i did
and when i select somthing it does not show the selection outlines 
it happend suddently i was working normally and it happend 
and now somthing weird happend 
i can t even see the fill or the stroke of my shapes 

as you see i made a circle but i cant's see it
 
in the normal view

in out lines view 

[Ton Frederiks]

Try if switching to CPU Preview helps: Cmd or Ctrl E

If that does not help, restart Illustrator, restart your machine.

And try to reset the preferences.

[Bill Silbert]

To see the object when it is selected make sure that you've tried View>Show Edges (Command (Mac)/Control (PC)-H). To see an unselected object while in Preview mode make sure that you've applied a stroke or fill to the object. Unfiled/unstroked objects cannot be seen in Preview mode. Yo will always be able to see your objects while in Outline mode.