How to run Sims without it crashing?

I have Sims 3 on my computer along with all of the expansions. I'm able to play for maybe 15 minutes, but then it crashes--which I assume is because of the fact that it's a huge game.

My computer is four months old, and a Lenovo ThinkPad T430. Is it possible for my computer to run a game this large? Short of uninstalling some expansions, is there anything I can do to keep the game from crashing?

Well no, its prob because of your ram being overused so ether uninstall all the explanions or get a new PC