Insert Text into the startup screen
Click Start Menu - > type ?regedit? in Search Programs and Files - > click OK or press Enter on your keyboard.
Registry Editor window appears, click HKEY_LOCAL_MACHINE - >Software - >Microsoft - >Windows - >Current Version - >Policies - >System
On the right of the screen, double click to select ?legalnoticecaption?
Edit String dialog box appears, enter a title for the text, enter in Value data.
Click OK to save the title.
Go back to System window to select ?LegalNoticeText?
<img src="http://tips.betdownload.com/cf/images/ndh/2013/12/windows-7-how-to-ad-text-on-the-startup-scre-5.jpg" border="0" />
Insert Text into the startup screen
Enter the text in the Value data ' in Edit String.
Click OK to save your content
Readmore: tips.betdownload.com/windows-7-how-to-ad-text-on-the-startup-scren-583n.aspx