Hi, no reply to my post #2?
It wasn't meant to fix anything, but it does tend to show it's not an effect of an installed program or task schedule, assuming that you left your PC long enough (several hours) in each of those states to demonstrate you still had the problem.
So, I'll ask specifically to be sure..
Did you leave your PC for several hours in Safe Mode and did you observe the same problem in Safe Mode?
And when you looked at your event log and reliability history, did you or didn't you see anything around the time that you observed the symptom?
Hope you can understand why I have to ask.
Could not fix or didn't find anything to fix?
You could try this:
Right click the Windows icon (aka Start button) on the Taskbar
Select Command Prompt (Admin)
Enter the following lines in the Command Prompt window:
Dism /Online /Cleanup-Image /RestoreHealth
If there are any errors on the screen after the commands run,
Navigate to C:\Windows\Logs
Right click the CBS folder
Select Send to > Compressed (zip) folderAttach the zip folder to your next post
answer yes to place on Desktop
Run DISM in Command Prompt
Run SFC /ScanNOW in Command Prompt
It seems that the new Anniversary update fixed the Start Menu problem.