Please do not power off or unplug your machine

In November 2013 I began seeing this message on the screen every time I shut down my Windows 7 Dell Inspiron desktop: "Please do not power off or unplug your machine. Installing update 1 of 1.." The screen holds that message for about three minutes and then the PC turns itself off.

Windows Update indicates that an "Important" update has failed to install: "Internet Explorer 11 for Windows 7 for x64-based Systems." This update is 56.3MB and was published 11/11/13.

I disabled antivirus and tried installing the update, no luck. Ran Windows Update Troubleshooter, it found four errors which it could not automatically correct, see attached screen shot.

Below is the data generated by TSG SysInfo:
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM)2 CPU 4400 @ 2.00GHz, Intel64 Family 6 Model 15 Stepping 2
Processor Count: 2
RAM: 2037 Mb
Graphics Card: Intel(R) G33/G31 Express Chipset Family, 256 Mb
Hard Drives: C: Total - 305195 MB, Free - 221749 MB;
Motherboard: Dell Inc., 0RY007
Antivirus: McAfee Anti-Virus and Anti-Spyware, Updated and Enabled

Any thoughts on how to successfully install the update? Or perhaps reset it so Windows can start over on it? Or something else?

Attached Thumbnails