Still working on this problem. The problem is related to the enhanced taskbar function of Start11, including the start button change. If the enhanced taskbar function is turned off, the change of the start button works even with reboots or shutdown/restarts.
I tried using System Internals Process Explorer to try and determine running programs that would affect the taskbar or windows explorer, and didn't find anything the jumped out as a cause.
I than used System Internals Autostart to look at programs being loaded at startup, again without anything jumping out as a cause. I tried using Autostarts compare function to compare my PC with Start11 to a PC without Start11 and nothing really showed up.
I believe my next method of attack will be to use Autostart to stop all programs from loading except Start11 and work through the various programs that do load to see if I can determine which is causing the problem, if any.
It would make things a lot easier if Start11/Stardock created an error/startup log.