You are running a Windows Server 2008-based or a Windows Vista-based computer that uses the non-uniform memory access (NUMA) architecture. When you try to start a Hyper-V virtual machine, the operation may fail because of a memory allocation issue. Additionally, you may receive the following error message:

An error occurred while attempting to change the state of virtual machine VMNAME.
‘VMNAME’ failed to initialize.
Unable to allocate 1024* MB of RAM: Insufficient system resources exist to complete the requested service. (0×800705AA)
*number will vary based on the amount of RAM assigned to the VM

This issue occurs even when there is sufficient memory available.