VM Server 2012 Hyper-v stops boot screen "Please Wait"

Hi everyone! I'm facing a problem with a VM with OS Server 2012. I installed some updates and after restart the server it  showed fail aplying updates and start to revert changes. After some time it starts showing "Please Wait" and till now it shows that and the VM does not go to the login screen. I've read some topic over the internet where people say to access the machine where the VM is located and press F8 trying to start in safe mode, the problem is that right now I'm unable to access it via console only RDP. Is there anything I can do? Thanks!
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andersoncarvalhoAsked:
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andersoncarvalhoAuthor Commented:
After trying to connect to the server through RDP it show "Preparing to configure Windows Do not turn off your computer". I could verify that all services are started and I can accesss via Windows Explorer all folders. This is an Exchange Server 2013.
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andersoncarvalhoAuthor Commented:
I already tried to start in Safe Mode, but it stucks in boot screen "Please Wait".
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Log on to the Hyper-V host and open a console session.

As a last ditch resort, there is a known good backup right?, you can boot to CMD and delete the Pending.XML file.

Method 11 in KB 2509997: http://bit.ly/W3vxCX
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andersoncarvalhoAuthor Commented:
Hi Philip1
Even after take own of the file I'm unable to rename it.
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andersoncarvalhoAuthor Commented:
Hi. I got it. I started the server with Windows Server cd and via prompt I renamed the pending.xml. I discvered taht the kb2871690 was the root cause of the problem so I unmarked and hide it, see below:

http://insidevirtualization.com/windows-server-2012/windows-server-2012-windows-update-failed-due-to-issues-with-kb2871690/

I run Windows update again and now the server is fine.

Thank you very much!
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andersoncarvalhoAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for andersoncarvalho's comment #a40297056

for the following reason:

There aditional point about the rrot cause of the problem the KB2871690.
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
May I ask why no points were awarded for the Pending.xml post please?
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Thank you. :)
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andersoncarvalhoAuthor Commented:
Hi Philip! I tried to update Integration Services on that VM and the problem is happening again. The worst thing now is that I can't use keyboard booting with Server 2012 ISO. The keyboard does not work, so I'm unable to try to rename the file pending.xml. Is there anything I can do??
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Do you have a 2012 R2 ISO? Try booting that one.

I seem to recall some issue with 2012 RTM and keyboard drivers being absent in WinPE.
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andersoncarvalhoAuthor Commented:
I tried exactly that. But the only the keyboard does not work.
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andersoncarvalhoAuthor Commented:
There aditional point about the root cause of the problem the KB2871690.
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