I ran into a BSOD 0x71 Session5_Initialization_Failed error after transferring a hard drive from Dell DCNE to another desktop Acer Veriton T661.

It also shows check disk then the BSOD 0x71. When I try the safe mode, the last driver showing would be mup.sys before it does an automatic restart.

The motherboard on the Dell desktop died hence I need to transfer the hard drive, this is for the client with limited budget.

Running the following will NOT fix the above BSOD as it already passed the MBR.

  • chkdsk /r
  • fixmbr
  • fixboot c:

The only solution that works for me is to copy a backup registry hive from C:\Windows\Repair\ folder.


To do that, use the XP Recovery Console or any Linux live CD and backup and replace the files (system, software, sam, security, default) located at C:\Windows\System32\Config\.

copy c:\windows\system32\config\system c:\windows\tmp\system.bak
copy c:\windows\system32\config\software c:\windows\tmp\software.bak
copy c:\windows\system32\config\sam c:\windows\tmp\sam.bak
copy c:\windows\system32\config\security c:\windows\tmp\security.bak
copy c:\windows\system32\config\default c:\windows\tmp\default.bak

delete c:\windows\system32\config\system
delete c:\windows\system32\config\software
delete c:\windows\system32\config\sam
delete c:\windows\system32\config\security
delete c:\windows\system32\config\default

copy c:\windows\repair\system c:\windows\system32\config\system
copy c:\windows\repair\software c:\windows\system32\config\software
copy c:\windows\repair\sam c:\windows\system32\config\sam
copy c:\windows\repair\security c:\windows\system32\config\security
copy c:\windows\repair\default c:\windows\system32\config\default

After doing that, you will be able to login to Windows as administrator then install some missing drivers.
Also, replacing the hives will loose the username configured to the disk, so you need to re-create a user profile and copy the documents and pictures back.
The data and installed programs will stay on the drives (will not be deleted) and will still open and function. But check all programs to make sure.