If you’re like most people, you probably don’t want to watch the “while you’re waiting” screen every time a new system is deployed with MDT or SCCM.
Good news: it’s easily disabled. You can create a Group Policy object to completely skip this welcome screen for systems on your domain. You can find that setting here:
Computer ConfigurationAdministrative TemplatesSystemLogonShow first sign-in animation
You can also disable it during your task sequence by importing a simple registry key:
Windows Registry Editor Version 5.00[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] "EnableFirstLogonAnimation"=dword:00000000
Just create a package (or application in MDT) that silently runs this key. That program would have the following command line: regedit.exe /S Disable_First_Run_Animation.reg