Hello. New to the forum. Just bought a new Dell XPS 8700. i7 processor, 16 GB RAM, 64 bit Windows7, NVIDIA GeForce GTX650Ti. I run RealFlight4.5 and within 2-4 minutes the computer crashes. I called Dell, and they had me install current driver (version 9.18.13.2049, date 6-21-13). Well...