Inplace upgrade from 2012 to 2012 R2 fails when nearly complete

Greetings,
I've tried several times to upgrade a Server 2012 Standard running Hyper-V to R2 several times now with no success.
The setup will start fine. There are no "compatibility" issues found or reported and the setup then proceeds as expected.
It gets all the way through the phases and past the installing features, reboots, does all the hardware devices install and completes that, then does another reboot and gives me a BSOD (sorry, windows could not start sad face)
It will then reboot again and just keep doing that until I catch the boot menu and select the option to roll back to previous Windows. It then goes through the revert process and gives me a functioning machine again.
It's very much like this thread:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/23d088d4-9ce0-4f12-a8c5-9bde3979e372/windows-server-2012-r2-upgrade-fails?forum=winserver8gen
I have checked and there are NO disk volumes at all without drive letters
I have tried setting all Hyper-V and other 3rd party app services to manual and disabled
I tried disabling VT support from the bios (this was an issue on a workstation upgrading from Win8 to Win8.1)
I've unplugged all external drives and the UPS connection (only mouse/keyboard attached)
This server is running a full GUI, and apart from the UPS and RAID disk controller there are no other apps or software installed.
I am doing the install from a copy of all the DVD ISO files placed on a directory on the C: and there is over 550GB free space
I first tried this several months ago and gave up. I just tried again today with a newer ISO of 2012R2 but still the same issue.

There is a minor BIOS update that I will probably apply to be sure, although the release notes only say it is for additional support for newer CPU's. All drivers are either updated with ones that are already R2 supported, or are devices that say to just
use the drivers that come OOB in 2012/R2. This is a "white box" that I've built myself, but it effectively uses the same "enterprise class" components and is fully 2012R2 compatible.
I was able to do a clean install of 2012R2 using a different drive that I connected up, so I know the system is capable of running R2, the issue seems to be somewhere in the upgrade process that messes it all up. I'd rather avoid having to do a fresh install
at this time though.
Because the upgrade actually seems to get through all the steps of hardware detection etc I'm at a loss where the failure is. My first guess is that there is some "other" driver that the system has decided is more suitable for something (and is incompatible)
than the one I'm currently using.

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Hi Andrei,
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Windows Server 2012 R2 Datacenter (Server with GUI)
x64 Date modified 3/18/2014
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Any ideas on how I can resolve this, or further troubleshoot?

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http://jacobackerman.blogspot.com/2012/12/how-to-remove-system-reserved-partition.html
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Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

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My company recently wanted to move from a Linux domain controller to a Windows system. We downloaded and installed Server 2012 Standard evaluation, set up a domain, and made sure things were working well. Now, we want to purchase the full copy, but we see
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Thanks,
B
Braden

As far as i know you can't upgrade an eval to a full install on 2012.
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Denis Cooper
MCITP EA - MCT
Help keep the forums tidy, if this has helped please mark it as an answer
My Blog
LinkedIn:
actually i believe you might be able to
http://technet.microsoft.com/en-us/library/dn303416.aspx
Upgrade means
moving from your existing operating system release to a more recent release, while staying on the same hardware. For example, if your server is running Windows Server 2012, you can upgrade it to Windows Server 2012 R2. You can upgrade from an evaluation version
of the operating system to a retail version, from an older retail version to a newer version, or, in some cases, from a volume-licensed edition of the operating system to an ordinary retail edition.
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MCITP EA - MCT
Help keep the forums tidy, if this has helped please mark it as an answer
My Blog
LinkedIn:

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I can install MBAM 2.1 on this server when not trying to use MBAM 1.0 existing databases.
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Hi,
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MBAM 2.0 upgrade installation then migrates the existing databases to MBAM 2.0.
The related information:
Tip of the Day: MBAM 2.0 - Server Upgrade
http://blogs.technet.com/b/tip_of_the_day/archive/2014/05/20/tip-of-the-day-mbam-2-0-server-upgrade.aspx
Upgrading from Previous Versions of MBAM
http://technet.microsoft.com/en-us/library/dn145058.aspx
Hope this helps.
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are trying to better understand customer views on social support experience, so your participation in this
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Inplace upgrade from 2012 to 2012 R2 fails when nearly complete

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