When I try to make a new movie, I import the video that I want to use. But after I do that, the clip goes from 15 mins. to 7 seconds in length, and the audio is gone and the actual video is just black. This didn't happen in the old version of movie maker that I had on my laptop, so is there a way to download version 2.6?

Additional info. The video is in .avi format

At the bottom of the program's window, there is this progress bar that "makes my video easier to edit." It only starts to fill for about a min., then it dissapears.