I am running Windows 7 too, Poser 8, and I have 6 gigs of memory. The processor isn't top of the line (E5600, IIRC), but surely this is enough to do this. I don't believe it is a failure due to lack of horsepower as it will render the whole thing - it just adds that stupid hair plant to the center of the stage and it grows towards the figure no matter where you put it.