DC auto shuts down

I have a DC that was recently re-created a VM, the original Server was a physical 2003 SP2 DC.
We created a new guest vm and gave it the exact hostname and IPconfig as the original. Everything seemed to run ok until the server began to auto shut down. Looking in the logs we can see Critical Systems event, Source Kernel-Power, Event ID 41

The DC is a DNS server as well.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is this hosted on ESXi ?
damejenAuthor Commented:
Yes ESXi 5.1 U3
would say that DC is important enough to permanently run in high power mode and not try to suspend it (aka Kernel-Power)

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If this is a SBS and there is another DC with FSMO on the organization it will shutdown every 30 mins. or so.
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Windows Server 2008

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