Corrupt registry - will not boot or repair

  george 13:24 02 Nov 2008
Locked

Hi,

PC with Windows Vista Ultimate, 64bit. Computer was getting slower and slower last night and I decided to reboot as there did not appear to be any unduly heavy CPU/Memory running. Failed to reboot with the error message: registry file failure,registry cannot load the hive\systemroot\system32\config\software Windows repair on the CD crashes with a page fault in non paged error message. Have installed all MS updates last week with no problems but suspect the AVG Anti-Virus updates may have caused the problem - only thing that auto updates on my machine.
A few answers on this for XP but not windows vista.

Any solutions would be appreciated.
Thanks. George.

  skidzy 15:52 02 Nov 2008

Can you boot into safemode and carry out a system restore ?

  george 17:56 02 Nov 2008

Hi,

No safe mode or window repair option works. All crash with the only thing working is the command line promp in repair mode.

In XP you can delete the software and install the .bak file - but that does not wotk in Vista.

Every time you install a new operating system you have to learn a whole new slew of repair options.

I suppose the next option is to uninstall the drive and connect that to my lappy and then change the registry. Then reinstall the drive into my PC>

Will try that if all else fails.
Cheers,
George

  Jim_F 14:53 03 Nov 2008

You should be able to boot from the install CD and run system restore from there.

  george 18:26 03 Nov 2008

Hi,

System restore fails with a "catastrophic error".

Trying to use my lappy to access the drive. Will try that first.

  Jim_F 20:31 03 Nov 2008

Hi,

Most disk manufacturers provide diagnostics as a free download so I'd suggest checking the HD as a first step.

  george 14:45 23 Feb 2009

Hi,

Through Western Digital download I tested the drive and it failed after 2 seconds. Torture test nearly made a minute.

Drive has been replaced and all works fine.

Not a problem easily diagnosed but through a system of logical checks arrived at that conclusion. Check you drive first.

  kristain 10:27 10 Dec 2010

Back Up the Registry
Step 1
Insert your Windows XP disc into your computer and restart.

Step 2
Follow the prompt to boot from CD or Floppy Disc.

Step 3
Click 'R' to launch the recovery console when the "Welcome to Setup" screen appears.

Step 4
Select the partition you wish to recover (there will usually only be one) and enter the password. If you have no password, leave the box empty and press "Enter."

Step 5
Enter the following commands into the command prompt box, pressing "Enter" after each one:

md tmp

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

Step 6
Type "Exit" to close the recovery console.

Step 7
Restart your computer.

Step 8
Click "Start," then "Shut Down," and "Restart."

Step 9
Press "F8" during start up.

Active Backed Up Files
Step 1
Select "Start computer in Safe Mode."

Step 2
Open "Windows Explorer." Click "Tools" and choose "Folder Options," then "View."

Step 3
Check the box to "Display hidden files and folders," and uncheck "Hide protected operating system files."

Step 4
Double-click the drive where Windows is installed (usually the C: drive).

Step 5
Open the "System Volume Information" folder.

Step 6
Open a folder that was not created today. You can click "Properties" to view a folder's creation date.

Step 7
Open a folder with RP in the title. This is a Restore Point, and will be created at different times depending on your computer.

Step 8
Click the file within the folder with "snapshot" at the end of the file name. It may look like "C:\System Volume Information\_restore{D86480E3-73EF-47BC-A0EB-A81BE6EE3ED8}\RP1\Snapshot"

Step 9
Copy the following files into the C:\Windows\Tmp folder:

_REGISTRY_USER_.DEFAULT

_REGISTRY_MACHINE_SECURITY

_REGISTRY_MACHINE_SOFTWARE

_REGISTRY_MACHINE_SYSTEM

_REGISTRY_MACHINE_SAM

Step 10
Rename the files as follows when you have copied them into the Tmp folder:

Rename _REGISTRY_USER_.DEFAULT to DEFAULT

Rename _REGISTRY_MACHINE_SECURITY to SECURITY

Rename _REGISTRY_MACHINE_SOFTWARE to SOFTWARE

Rename _REGISTRY_MACHINE_SYSTEM to SYSTEM

Rename _REGISTRY_MACHINE_SAM to SAM

Step 11
Restart your computer. Launch from the Windows disc again and launch the "Recovery Console" by pressing "R."

Step 12
Type in the following commands, pressing "Enter" after each one:

del c:\windows\system32\config\sam

del c:\windows\system32\config\security

del c:\windows\system32\config\software

del c:\windows\system32\config\default

del c:\windows\system32\config\system

copy c:\windows\tmp\software c:\windows\system32\config\software

copy c:\windows\tmp\system c:\windows\system32\config\system

copy c:\windows\tmp\sam c:\windows\system32\config\sam

copy c:\windows\tmp\security c:\windows\system32\config\security

copy c:\windows\tmp\default c:\windows\system32\config\default

Step 13
Restart your computer.

Step 14
Click "Start," "All Programs" and "Accessories."

Step 15
Click "System Tools" and "System Restore."

Step 16
Restore to a previous restore point.

Step 17
Restart as prompted

for more info click here

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