Altiris 6.9 SP6 Windows 7 Imaging

I've just built a new Altiris 6.9 SP6 server for our Windows 7 imaging. It's running on a Server 2012 R2 VM. I have been using Altiris 6.9 SP5 previously but wanted to start a fresh. I have setup the WinPE 4.0 ADK files and imported those files into the PreBoot files also.

However when I push our Windows 7 image to a machine, after it is finished and boots back up it gets to the Starting Windows stage, it crashes and then restarts. I have copied over our processes to our new Altiris server so nothing should be different.

Any ideas?