I have managed to resolve this.  The update wrote over my raid drivers.

– I downloaded the necessary drivers from the manufacturer site.

– Copied them over to the Windows Server 2012 USB drive.

– Launched installation, and chose system image recovery.

– Of course there was no image found but I was able to choose advanced and load the drivers to get one more option: Continue to Server           2012.

-Nowthat I can see the drives, I backed up and chose Command Prompt.

-I looked at diskpart and list volume.

-I navigated to (in my case the C drive was listed as E) : e:\Windows\System32\config

cd e:\windows\system32\config

rename default default_old

rename sam sam_old

rename security security_old

rename software software_old

rename system system_old

cd regback

copy default e:windows\system32\config

copy sam e:windows\system32\config

copy security e:windows\system32\config

copy software e:windows\system32\config

copy system e:windows\system32\config

Exit and restart and then goto services.msc at login and disable Windows Updates

This allowed to me to view all the drives. And in turn I was able to resolve my original ‘Windows update boot loop’ problem.

!!!!!Replace the drive letter with whatever driver letter you see in list volume!!!!!!