Hello, I have recently bought a new computer with windows 7 on it, and have thus installed FSX. The program runs flawlessly on the highest settings, and there is absolutely no lag with everything set so high. But after about 30-60 minutes of flying, usually about the time when I am on the approach, The program Randomly ends. Sometimes it has a "Flight simulator x has stopped working, windows is checking for solutions" (which it never finds a solution), and sometimes it just ends with no notice or anything and just brings me back to my desktop. I do not know what to do with this problem, I have tried reinstalling the program, and setting it on different graphics settings, but still I get the same problem. This is very frustrating because I spend all that time getting to the airport, but the program ends right before I can land. Any help would be appreciated.