[Serpiko]

This is weird. Were the crashes caused by fire/smoke effects, the game should crash both in external or internal view. Nevertheless, you could try to remove effects mods only and see if crashes persist in stock mode. If not, you know the problem is in effect mods, and you can try to reinstall them in a different order. If not, there's something else.

...oh, and since you already dusted, try also running an antivirus scan and/or a scandisk, which never hurts! 8)