windows 2008 r2 starts in recovery console after migrating

Hi,

we have migrate a windows vm to a other host and start windows update. after reboot the windows vm its starts in recovery console. We have test it with a other windows vm. its the same issue. what can we do to fix it, but all windows maschines doesn´t start after migrating and update? please help. very thanks.

ps: after restore a backup and doenst install the window updates, the vm starts normaly. we install not the old updates but only the new comes at the day after migrade. than its starts normal again.

regards