Display Log on Message At Start Up
At the time of Windows boot up a popup message can be added which contains any message you wish to display. In many organizations there is a message to display instructions or rules or warning for user who log on in Windows, whenever you boot it.
Here is how you can do it in easy way:
-  Open Registry Editor (Go to Start Run type Regedit & press enter)
-  Navigate to : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
-  In the Right Side pane select & open LegalNoticeCaption and enter a value that you want to see in the Menu Bar.
-  Next to it open LegalNoticeText and insert the message you want to display each time Windows boots.
-  Close Registry & Restart for changes to take effect.
So Enjoy your custom message.