SCVMM 2012 R2 - "Computer Name" Missing from Guest Machines?

Hi,

Just set up SCVMM 2012 R2 on Windows Server 2012. Problem- after creating a few VM's (hosted on a Windows Server 2012 Hyper-V host), I'm noticing that on the "General" tab of the Properties dialog for VMs with Windows 7 and Windows Server 2012, the "Computer name:" field is blank. I have the Virtual machine guest services installed on the VMs, and all updates installed on the VMs. On VMs running 2012 R2 as the OS, the "Computer name:" field is populated correctly. Is this a known issue, an unknown issue, or am I just doing something wrong? The problem here ultimately is that I'm trying to create a Visual Studio Lab Management environment, and when doing so, it complains that the computer name is missing when I try to add the machines to the environment.

Thanks