Beginning with the anniversary update (and all subsequent updates) my computer will not restart during the updating process. All I get is the loading icon at the bottom of the screen with a black background. Eventually I have to force the computer to shutdown (often more than once) before it will get passed the icon and to the desktop. At that point I will check to see if the update was, in fact, installed. So far it has each time. Any ideas how to correct this issue?