Hyper-V - An error occur while attempting to start the selected virtual machine

Hi,

I have Hyper-V installed on a Physical Server and created a TEST Virtual Machines, but when i start the VM it is showing a below error.

Error Code :- An error occur while attempting to start the selected virtual machine. "Virtual Machine could not initialize"

Operating System :- Windows 2008 Server R2 with Hyper-V role enabled.

Below Steps tried for resolving the issue

1) HVT is enabled on the Physical Server in BIOS

2) applied the patch as per the below Microsoft KB article.

http://support.microsoft.com/kb/2517374
3) Applied the Windows 2008 Server R2 SP1

Please revert if any more details required.

Regards,

Sunil Tumma