On my laptop I have 2 copies of wow (1 for ultra low detail etc for boxing, and 1 with fullscreen high detail etc for playing solo when im away) - I copied the solo play one over and it crashed also, where I dont have a problem with it on my laptop, so its not the wow install. Ive also tried running with no mods and runnin repair

I ended up rippin out my old 8800GTS from my last machine last night and throwing that in so i'll see how it goes, ill be very surprised if this one bombs out on me cause I never had a problem with it ever, if this one works for awhile i'll know its definatly the card/drivers