As far as your shutdown problems, have you checked your BIOS settings? You want to make sure that you have the power button set to shut down all the way. Also, you may be holding down the power button for a different period of time. Some motherboards, ATX in particular, will shut down completely whenever you hold the power button for more than 4 seconds, but may only go into suspend mode if held for less, depending on the setting in the BIOS. This could explain why it sometimes shuts down, and sometimes doesn't. I also wonder why you don't just use the shutdown menu in GameEx, since you are using it, the best way to shutdown, is using the menu to do it.