Taken from here.
It is possible to enable or disable "First Sign-in Animation" in Group Policy Editor:
Type WinKey + R, and press Enter. Enter
gpedit.msc
and press Enter.If prompted by UAC, then click/tap on
Yes
.In the left pane, click/tap on to expand Computer Configuration, Administrative Templates, System, and open Logon.
In the right pane of Logon, double click/tap on
Show first sign-in animation
.To Enable "First Sign-in Animation", select
Enabled
.Force a Group Policy Update by opening 'Run' again and executing
gpupdate.exe /force
.
Please note that you may not have these features natively in Server 2008 and will need to import these settings into your GPMC. Get these here.