Fixed
Thanks for everyone helped me :D
and finaly i found the fix ;) . and here its for anyone who faces this problem
just go to Control panel > Hardeware and sound > Realtek HD Audio Manager
and this screen will appear to you .
(http://store2.up-00.com/2015-07/1436100655571.png)
full image : http://store2.up-00.com/2015-07/1436100655571.png
after double click this screen will appear
(http://store2.up-00.com/2015-07/1436100655772.png)
Choose ( Front Speaker out ) then click ( ok )
ENJOY ...
and more thanks for everyone helped me.