Show detailed Windows progress messages

Enable the following GPO:

Computer Configuration -> Administrative Templates -> System -> Display highly detailed status messages.

Which changes:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

VerboseStatus DWORD

Disable = delete the key
Enable = 1

Here is what it does:

If you enable this policy setting, the system displays status messages that reflect each step in the process of starting, shutting down, logging on, or logging off the system.

It is awesome. Particularly when you’re sat there waiting for a step which seems to be unusually slow, you can see what the step even is (!).