Server 2016 server gets stuck while restarting

A Server 2016 Hyper-V base server with 6 running Hyper-V virtual machines gets stuck while restarting.

The restart process goes through all of the steps and then displays "Restarting."

However the server stays stuck here and never actually does restart so I have to hold down the power button and the server powers off right away and then I power it back on.

This server is using an Intel S2600cp server system board.

The server was restarting fine until this issue started occurring two days ago.

What can be done to fix this issue?
IT GuyNetwork EngineerAsked:
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Was an OS update installed prior to the reboot problem?
IT GuyNetwork EngineerAuthor Commented:
No all OS updates were installed last week and after doing so this server was successfully rebooted several times.

I don't know of anything in particular that changed since this issue started ocruring.
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
What gets restarting the host or the VM(s)?
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IT GuyNetwork EngineerAuthor Commented:
This happens while restarting the Hyper-V base (host) server. The virtual servers are fine and don't have this issue.
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Pull the power supply(ies) and reseat them firmly.

Make sure the UPS the server is attached to isn't doing something funky.

Check the firmware/BMC level logs for any power related anomalies or server board related anomalies.
IT GuyNetwork EngineerAuthor Commented:
Is there anything within Windows that I should do?

What should I look for in the event logs?

I loaded the latest drivers right after installing Server 2016 and as I mentioned this issue just started ouccrring within the last couple days.
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
It's more than likely a hardware problem.

Make sure there are no USB devices except a keyboard and mouse plugged in when restarting. The early boards like the one in this system didn't like USB drives plugged in. They'd get confused.
IT GuyNetwork EngineerAuthor Commented:
There are no USB devices plugged in except for the keyboard and mouse.

What else can be done to fix this issue?
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
The process I mentioned above.

Another would be to pull the power plug(s), press the power button for about 15-20 seconds to drain any residual power, and plug the power plug(s) back in. Then power it up and go through a reboot cycle.

Is there an off-chance the server was set to automatically install updates?

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