Thought this might be helpful to some of you.

I and friends of mine have had Windows startup quit with the Windows Logo displayed. Several of my friends reinstalled Windows to solve the problem. One reformatted his C-Drive & reinstalled because he could not find another solution.

After considerable research, I discovered that various events can happen which require a response, but the Window with the Question & Reply Buttons is hidden behind the Logo.

A file called MSDOS.SYS can be edited to include "Logo=0" under "[Options]", which will prevent Logo from appearing.
All of my friends have done this with their systems. When (if) problem occurs, a message indicating the cause will be visible. In addition, on a normal startup you see some extra data.