This is a strange problem. I have a computer with both xp and 2000. i have 2 RAM chips of 512 each (ddr pc2100). When i have both sticks in (1 gig) my computer will shut down randomly (once every few days, at the strangest times, with both O/S). If i take out one chip (either one) the comp works just fine. I checked the event log and each time a different code appears. What is going on? David Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com