optiplex reboots instead of powering off

[OBLAMA2009]

i installed winxp sp3 with a new wd hard drive on an old optiplex gx260. i works fine except that when i shut it down through windows it doesnt power down. instead it goes through the windows shutdown procedure and then immediately boots up again, as if i had told it to restart. it doesnt have this problem with linux. also sometimes when it goes throught the windows shutdown procedure a window with note briefly appears, but too quickly for me to read it. i removed sp3 and it still does this

 

[Dahak]

Ive had seen this before with logictech keyboard software. but that was awhile ago. Turn off the Automatic Restart On Blue Screen - My Computer -> Properties -> Advanced Tab -> Startup and Recovery Settings Button and removed the checkmark beside the Automatically restart. This way it will blue screen on you and you can see if it points to anything

 

[OBLAMA2009]

thanks for the reply. it looks like that is already unchecked. the computer isnt failing on shutdown so im not sure if it will ever give me anything

 

[somethingsketchy]

Have you tried to install any new updates, besides SP3? You could try rolling back to a previous state and see what's causing the desktop to "skip" the shutdown process.

 

[OBLAMA2009]

yeah i did remove sp3 and it didnt make a difference. i noticed though that the on button on the computer causes it to reboot if pushed before windows even starts booting so i think it might be a bad switch or a defect in the machine rather than with windows, does that sound likely?