PowerPoint Problems

I use PowerPoint 2010 on my Asus laptop with Windows 7 Home Premium every week for presentations of songs for the worship service at my church. Each presentation has video and audio files embedded into it. Just recently the program will pop up with a message stating that "Microsoft PowerPoint has stopped working. Windows is checking for a solution to the problem." Then "Microsoft PowerPoint is trying to recover your information... This may take several minutes." This is happening every couple of minutes. What can I do to stop it? It is driving me crazy because I can't get anything accomplished before it shuts down again. I have ran AVG virus scan, AVG PC Tuneup, and Malwarebytes' and found nothing. Please help!