Numerous Explorer.exe processes run on Server 2012 reboot causing server to hang

I have recently installed Server 2012 as a Domain Controller. AD, DNS and WINS services as well as Hyper-V manager.
I am facing a very strange issue which does not occur every time I reboot the machine (but on most times).
The machine boots to Windows and hangs, I can notice a large number of explorer.exe processes (that start without any user intervention). The server hangs completely and I am unable to kill the processes manually.
I have to restart the server remotely via shutdown /i.
On reboot the server works fine, If i reboot the server by switching off the hardware manually the same issue may occur..
Any idea what might be causing this behaviour?
Thanks and Regards

Hi Carlos082,
I would recommend you to check the event logs which generated during the server hangs.
Please also try to set up a Performance Monitor log and let it run for a while. At the very minimum, add the counters for Memory, Process, Processor and System. The length of time that you need to let it run will depend on how long the system
takes to hang (assuming that this is happening repeatedly). Set the interval so that you can capture at least a hundred samples over the life of the log. Any low memory condition should be readily apparent - especially if it is a steady leak.
Finally, follow the steps in
KB Article 244139 to prepare the system to capture a complete memory dump for analysis if needed.
To troubleshoot the server hangs, please follow this article:
Troubleshooting Server Hangs - Part One
I hope this helps.

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Numerous Explorer.exe processes run on Server 2012 reboot causing server to hang

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