ok well im using microsoft windows xp home edition theres no warning my computer just automaticly goes the the blue "windows is logging off screen" my computer is a compaq presario, 2.8 ghz intel celeron prosessor 512 sdr ram but i added an additopnal 512 and 120 gb hard drive and it started on monday and i did nothing abnormal on monday except my computer was on a little bit longer than usual