Audio and visual out of sync

I recorded a video with my laptop (it's a Lenovo ideapad 320) and imported it into Adobe Premiere Elements.  When I play the video in the computer's movie player or in Windows Media there's nothing wrong with it.  As soon as it's in Adobe Premiere Elements, the sound and the pictures get out of sync.  The sound track and the pictures weren't recorded separately.  Sometimes, without any exaggeration, it can be three or four minutes between the sound and the picture.