I did the SP2 thingy update about 5 days ago, set up my computer for automatic updates and bam, my computer went nutzo. The screen went blank and there was a siren sound coming from that complex box. My comp tech son came over, shook his head and said he thought the power source fried. He found that it also had a virus. I think the virus was the SP2. He reformatted my hard drive. But, the graphic card seems to be acting up. I'm just guessing, but SP2 is probably satanic.