Recovering the original system method unexpectedly shuts down during Windows Server 2012 upgrade R2

2012 The upgrade R2 process forces the computer to shut down, causing the blue screen to "Bad_system_config_info" after starting again. Using the 2012 installation disk into the attempt to repair the failure (Safe mode nothing to think about), go to the command prompt to view the error log found to be caused by the registry accidental corruption (I want to on the debugger).

Because Windows backs up the original registry when it is upgraded, it can be found under the corresponding operating system drive letter + "\windows\system32\config\regback" (for example: C:\Windows\System32\config\ Regback), overwrite the following file with the file that corresponds to the "\windows\system32\config" directory.

After restarting, continue with the blue screen and prompt "The boot Configuration Data file is missing some required information FILE:/BOOT/BCD Error code 0xc0000034", need To re-enter the command prompt to repair the BCD store, execute the following command:

Bootrec/rebuildbcd

It will then scan to the corresponding Windows directory, enter "Y" return. Restarting Windows has entered normally, but the user profile is corrupted and does not load properly, this time windows will create a temporary configuration for the current system administrator account, corresponding directory: C:\Users\TEMP. Check the user profiles found account Status=backup, decided to go to the registry to reset the status of the corresponding account to enter the system.

The user's configuration information is stored under "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList", and the system administrator's original configuration item is added with the Bak suffix. Change the value of RefCount, state to 0, and delete the temporary configuration entry to log back in. Discovery is still unable to use the legacy User Configuration, open Event Viewer discovers that Ntuser.dat is occupied, and uses a PE search to not discover the occupancy process. Presumably this state is likely to be kept inside the Ntuser.dat. The decision to back up the original configuration directory was deleted, and the system was re-created Ntuser.dat before copying the files in addition to the past.

Recovering the original system method unexpectedly shuts down during Windows Server 2012 upgrade R2