I loaded up a model, added morph targets, played around with the morphs, added textures, Added Hair, added textures for the hair, posed the figure, set up the camera angle, and started rendering, after all the shadow map and on to the main rendering process, my computer weirded out and I got a blue screen of death. this has happened for the 3rd time already, do I need to re-install or do I need to fix something... or worse, reboot my entire computer.

This isn't really related to the main topic... well in away it is, sometimes poser would just shut down right out of the blue. no error messages, no low memory warnings, or anything. it just disappears out of nowhere. My computer would be fine too. What's all that about? This happens a lot.