Rights problems during installation can not be. Performing during the installation of the operating system occurs with the rights SYSTEM
.
Accordingly, the command net user administrator /active ...
not need.
You will need the templates that can be taken here:
Application templates on Windows Embedded Standard 7
I think it's not quite the distribution. Net 4, which is needed.
Try to get hold of this one:
Microsoft .NET Framework 4.0 for Windows Embedded Standard 7 (Dec 2010)
may be help ...