This is an old post but it might help someone else who comes across this same problem.
This example works for Windows 7 -
At "Start" or "Desktop" -> "Computer" --> right click on "Properties", and then tap "Advanced system settings"
In the advanced options of the system menu, click on "Settings" for Startup and Recovery.
In Startup and Recovery, uncheck the "Automatically restart" for system failure. Click "OK" after unchecking the checkbox.
TamKat :)