My computer updated Firefox and Zone Alarm in the same day. Was previously having to shut down ZA to get on internet. Now everything is screwed up. Tried dial-a-fix which says Error -2147023824 encountered while trying to register Windows\system32\wuaueng.dll - Also my computer will not shut down now. Absolutely NO internet. Word messes up and lots of applications seem to get hung. I am trying to research problems one by one. I am retired and taking classes to learn more about fixing my computer-still in learning stage and trying to put all info received in my poor muddled brain together. Any advice is welcome!