HYPER-V 2016 host is blank dark black but the 1 vm running on it is fonctional??!!

I have a Windows 16 server ppdc that hosts Hyper-v.
I have only one vm and it is my DC ppdcb
I see nothing but the mouse on my physical monitor that is connected to.
MSTSC to ppdc doesn't work.
Manage remotely to it doesn't work.
Hyper-v manager from ppdcb to connect to ppdc doesn't work.
\\ppdc gives me Network Error Windows cannot acces. Check the spelling of the name otherwise there might be a problem with your network.....
I tried \\192.168.05 same thing
How come my VM is working fine but my Host is unaccessible
Affraid of pressing the power button after doing a shotdown on my vm ppdcb
What would be the cause.
Is a lack of HD space on ppdc be the source of that?
What are my options?
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David Johnson, CD, MVPRetiredCommented:
does ctrl-alt-del produce the security screen? if you start task manager does it display? from task manager can you run explorer.exe ?
Joe FulginitiNetwork EngineerCommented:
Safely shutdown the virtual machine and then hold the power button down on you physical server to turn it off.  Once it comes back up run all windows updates and update the server drivers and firmware that might be outdated.  I had the same problem with server 2016 too and the updates fixed the problem.

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Never hold the power button. Press it shortly and a controlled shutdown will occur. Holding it down will let the host crash as in "power loss".
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philjansAuthor Commented:
I wanted to know if the source of the problem could have been a lack of space on the C drive.
I know more Vmware, first time at Hyper-V, and I suspect a Snapshot was "activated" and maybe it filled out the C drive or the E drive (all VM are located on the E drive so I guess snapshot would be place on the E??)
In the machine settings, you can verify the snapshot location. See if it's c: or e:. I don't think it's because of a full disk.
philjansAuthor Commented:
Thanks guys.
After the vm turned off.. I tried just pressing the power on my host but nothing worked. I hard shutdown it like Joe said.
McKnife: effectively, there was no problem of space.  It seems that the process explorer.exe and sqlserver consumed all the ram which brought the computer to a extremely slow state.  sqlserver is link to veemzip and I got a lot of event id 701 18053 on it...
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