I've gotten this BSOD about 5 times in the last week or so. I'm really getting worried and frustrated. The only thing I've changed on my computer recently, is I've upgraded my nVIDIA MX440 64mb PCI card to an ATI Radeon 9800pro 128mb AGP. I've run some of memtest86, and no errors were picked up. I will finish the entire test tonight (which test?) PLEASE HELP!!