FSX SUDDENLY SHUTS DOWN?

While I have been trying to resolve other problems with setting up multiple screens (refer previous Thread), I now find after setting up the views on the separate monitors for a few minutes FSX program completely shuts down and has to be restarted. Can anyone throw some light on this issue.

I operate with I7 processor, 64bit, 8 gig RAM, 2 x GTX 250 video cards.
Mark

One of the main reasons for it to shut down is overheating.
Cleaning the dust out of the fans (including the video cards) would help.
Be sure you have a big enough power supply for that many items in the machine that eat up power.

Thanks for the suggestion Radarman. However I have a number of fans operating on both on the video cards and the PC box and it doesn't feel too warm around the back of the PC. The power supply is already a fairly hefty one at 800Watt. But I'll check it out for dust give it another go.
Thanks again for your reply.

You have a sufficient p/s but you can't tell if it's overheating just by feel.
Clean it out and I hope that should do it.

Check your Event Log for clues.

I'm a bit confused with this though, as you would think the whole PC would shut down with heat issues. In this case it's just the FSX program only.

Not necessarily.

Games and programs like FSX use a lot of memory. Which in return, causes your computer to run harder.

If the computer can't handle it because it's not getting sufficient airflow to run processes that use so much memory, it'll shut the program down.

Flyboy92

Many thanks for your comments and advice. I will certainly make sure it is clean and install another fan just in case.
Mark