Please provide more details about the file you are importing.
Do you get audio while playing it back in the source monitor? Try to transcode the file into a different format and see if you have the same issue.
I import AVCHD from Panasonic. It worked well before Asus fix my computer. They reinstall the Windows then Adobe Premiere.
But I can get audio when I play it back.
I just import it and the video doesn't have an audio.
Do you mean to say that it doesn't play back in the source monitor as well? Do you have the proper folder structure?