Aiso host problem
 

I am working on cs3 last time i am having problem with audio. When I press play popup the window " AISO host Error 709 " and after i got this message i could not play even in the new blank project it show the same message window and i could not work on my project
so i have to work on my un affected project but i have to do all the things again

how can i get out from this problem what is my exat problem
i have also reinstalled audio driver

sound card is from realtek