Displaying a Text Notice before Logon

• Click Start button then type regedit in Run option then press Enter for next.
  
• Here locate the location to:
  
• HKeyLocalMachine \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Win Logon
  
• Here in right side panel, right click to create a new string value LegalNoticeCaption and give it a value you want to see in the menu bar
  
• Now again right click to create a new string value called LegalNoticeText and change the value you want to see in the dialog box
  
• Now close the registry editor and restart your computer after any changes to go into effect.