When you reboot Windows Server, you are prompted with a message box asking what you want Windows to do? I usually say Restart because I’m testing an install or whatever. You are also prompted to say why you want Windows to do whatever it is that you want Windows to do. I usually type sljfaljd; and move on.
You can disable this prompt:
Run GPEDIT.MSC to launch the Group Policy Object Editor.
Open Local Computer Policy | Computer Configuration | Administrative Templates | System.
Open “Display Shutdown Event Tracker” policy and set it to Disabled. Click OK.