Windows Setup Option

When logging on to Windows 10 one of the early screens gives a timed option to select either Windows 10 or Windows Setup. The second option takes you to Windows Boot Manager. Could someone please tell me if this option screen is a fixed feature of Windows 10 and, if it is, under what circumstances might one need to select the Windows Setup option.

Hi, a quick search found this
http://answers.microsoft.com/en-us/w...e-a89e34fdf45b
Ok, it's not about Win 10 specifically, but it looks as though the same solution would apply.
Hope that helps..

Thank you dalchina for the very helpful lead. I went into msconfig and deleted Windows Setup.