Screen frozen on "Starting Windows" when building Server 2008 on Server 2012 Hyper-V

Symptom:

When trying to build a Windows Server 2008 (R2 in my case) on Server 2012 R2 Hyper-V, the VM would not get past the 'Starting Windows' screen.

Fix:

Recreate the VM in Hyper-V and ensure 'Gen 1' is selected ('Gen 2' will only work for Server 2012 +)

SMS log location (WinPE 2.0)

During the WinPE build stage you can find hit "F8" (providing you have enabled command prompt support on the boot wim file) to launch a command prompt. From the command prompt visit x:\Windows\Temp\SMSTSlog and launch the SMSTS.log with notepad (notepad.exe smsts.log).

Hint, use SMStrace to read the log. Its your best friend!