unable to install WSUS role

Hi, I'm trying to install WSUS for SCCM purposes for SUP role. Here are the steps I did:

1. Install SQL Server 2012 with instancename: SCCM

2. Installed Configuration Manager 2012 R2

3. Trying to install WSUS but it always says that it requires a restart.

Tried to restart the server but same results. In installing the WSUS, I followed based on this instructions:

http://social.technet.microsoft.com/wiki/contents/articles/10020.installing-wsus-server-role-on-windows-server-2012-with-microsoft-sql-database.aspx

Is there something I'm missing in this?

Thanks

Jeff