Acer intel HD grapchic, window 7 screen resolution why dont use my VGA

[megakiller2]

can someone help me with my screen resolution, window use (mobile pc display ).

and when i klik detect than show (display on VGA). .

i can't change ro display on VGA, can some help me!!

 

[megakiller2]

http://postimage.org/image/qaeyvnj8/