Try this and enable changes.
I switched my windows op from normal to selective startup mode. But when I try switching back to Normal startup mode or try changing some of the startup setting, it won't let me enable my changes saying I need to log on as an administrator to do so. After I ok the message, it prompt a restart as afterwards my changes did not take effect. However, I was indeed logged on as an administrator doing so, as I've even check the user accounts from the control panels confirming this. Now I can't even switch back to normal start up.
Suggestion anyone? Thanks in advance.