I'm running XP and somehow my power options setting were changed to "Presentation" so my computer logged off after being idle for several minutes. I went into the control panel and set it back to "Home/Office Desk" where it was before. Now when I boot my computer, after boot is complete, my computer states that windows is shutting down and then proceeds to shut down. I don't even have time to go into the Power Options to change anything even if I knew what to change. Any help is much appreciated.