XP shutdown solution

I had a shutdown problem after I freshly install XP Pro and FS2002. What happened was after certain time inflight or on the ground,XP shutdown n and start computer.It took me almost a week trying every solution I can think of. Then I got article about not for FS2002, but general gaming tip says disable all power management program include screen saver.They are sometimes not compatible and computers to crash. After I turned off screen saver and power manager from XP, BINGO no shutdown for 5 hours flying various airplane and locations.So,maybe some of you who have XP blue,Try and post the result.Key From KLAX