I have a Dimension E510 with Windows XP. They system is a little over a year old so the warranty is off. At Dells support site there were several updates, some recommended and others marked URGENT for my system. I downloaded one, followed the instructions exactly, even watched the video for the installation. Up came a blue screen saying Windows shut down so there wouldn't be any damage to my system. I was to dis-able the driver I downloaded. Except the mouse and keyboard doesn't work so that was impossible. I took it to Applied Micro and they contacted Dell. Dell recommended a new motherboard. That didn't work. To quote the technician, "Recommend replacement of PC". I paid $1300 for this system and can't afford another one. Anyone have any ideas?