If I'm flying into an airport and need to change the runway and star in the fmc after about 3 minutes or so fsx crashes. Any ideas? Thomas Thompson

You need to be way more specific than this please. What is the exact situation, what are your system specs etc?

I think I know what I might have done. When i entered the second star I noticed nothing was happening after I hit ex. So I placed the first ils fix first to fly direct to it but the old star still showed up on the nd. Should I have deleted the way points on the first star. Before entering the secound star? I still haven't found the way to delete the did or star completely in the fmc in the flight manual. Thanks thomaI'll get more details on my pc and the flight if I can duplicate it again. Thanks for the help . Thomas Thompson