No thats not it, it wasn't becuase of an update it does it the moment after I install Vista and if an app wants to restart or I click retsart, vista shuts down and reboots the comp but right before displaying the loading page it will reboot the computer again and agin and agin unless i press the power buttton and shutdown that way and then power it back up. I have to click shutdown or tell an app not to restart the computer to avoid the problem