Ok so here's the deal, i don't play on retail wow so mostly oftern i am playing on private servers such as rebirth wow and stuff, but anyway. Sometimes hen i get into maps like Deepholm, Icecrown Citadel, and like 5 other specific places my computer crashes all of a sudden, everyone can go those places but me, my computer is not the best so i always use the lowest configuration when i am playing, my computer specs are this

Intel Duel-Core E2200 @2.2ghz
3GB Ram
Intel G33/G31 Express Chipset Family 256mb. D:<

It is not that big thing, but i can still play very smoothly on other maps, except those that i said. So what can it be? ppl say me its overheating but i know it is not, cuz my comp case is always opened whit a fan pointing to it, plus 3 fans inside. i need a help. 5 stars 10 points for the most decent answer. btw sorry for english
@nancy yes i reinstalled bunch of times due to my HD getting old and constantly changing HD's, so yes. i did reinstalled and nothing

Have you tried uninstalling and reinstalling it cause it may not be loading properly and crashing out.