I had Real Flight 5.5 for a while, no problems so far. I haven't used it in a while and when I ran it a few months ago, my computer crashes.
This never happens with any other software, it's an i7 and has plenty of resources for the simulator.
Now it run for a minute or two and then teh computer shuts down.

I'd suspect some graphics accelerator causes this, not sure. I have WIN 7 installed.

Any advice?