"Inaccessible Boot Device" When added a fully patched Hyper-V host to VMM.

I have a patched Hyper-V (latest patches until 18 mars 2015). It works fine to boot and play around with. But when I add it into Virtual Machine Manager (UR5 with al l the latest patches) I get a Bluescreen with the message "Inaccessible Boot Device".

If I add a Hyper-V hosts without any patches, and VMM it works fine, it even works fine when updated to latest version.But if I remove it, and add it again I will get a bluescreen!

I am running my lab inside VMware workstation 10.0.5.

Any idea?