Hyper-V Guests suddenly stopped working

Posted by Anton Gogolev on Server Fault See other posts from Server Fault or by Anton Gogolev
Published on 2010-05-25T10:10:15Z Indexed on 2010/05/25 10:21 UTC
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Filed under:

hyper-v

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Troubleshooting

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hyper-v-server-2008-r2

Hi!

Here's my configuration: Windows Server 2008 R2 Standard as a host OS, and two guests VMs running the same exact OS.

Yesterday, Trial Activation on all OSes has expired and quite naturally all machines shut down. I rearmed the host, but cannot log on to either guest VMs. From what I see, they start up normally (State is listed as Running) but CPU Usage seems to be stuck at 3% and when I connect to it all I see is black textmode screen with cursor blinking.

One of my VMs has several snapshots, and when I revert back, it starts up normally. Moreover, "reference VM" (the one I cloned these two VMs from) starts up just normally.

How can I troubleshoot this issue?

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