I do not know if it is possible for you to have the registry backup from Erunt fix your problem, or if trying would create more problems for that matter, but since you were asking if it was possible to use that backup, I thought I would post the info from Erunt on how to do that...
What to do if Windows does not boot anymore?
If Windows refuses to boot normally it can be for a variety of
reasons, not the least of which is that the registry is damaged, or
you installed a program or driver which is somewhat incompatible with
the system or buggy, in which case restoring a registry backup from a
point where everything was running smoothly should also help.
The first thing to try is to reboot and press the F8 key immediately
before the first Windows screen appears, then select the "Last Known
Good" option from the menu and see if Windows boots up with this
option. If it does, you're all set.
If it does not, reboot again with F8, and select the option "Safe
Mode". If Windows boots up in safe mode, you can restore a registry
backup just as you would in normal mode, as described above.
If safe mode also fails, read on...
Restoring the registry with ERDNT - Emergency Scenario I
Situation: Windows fails to boot up in normal and safe mode, but you
have a DOS boot disk or another (working) operating system installed
on your PC which is supported by the ERDNT restoration program, and
from which you have full access to the drive(s) containing the corrupt
Windows installation and the registry backup.
Boot up to the working OS, and open the folder containing the registry
backup you want to restore.
If the drive letters are different to as they were in the Windows
where you created the registry backup, you need to edit the ERDNT.INF
file now to reflect the new drive letters, before trying to restore
the registry backup. For example, if the drive with the corrupt
Windows installation is now available as D: instead of C:, then you
would change all C:\... references in the INF file to D:\... . Editing
the file can be done in Windows with the Notepad program, and in DOS
with the EDIT command.
Now run the ERDNT.EXE file to start the restoration program. Select
which registry components to restore (just the system registry will do
in most cases), then start restoration. When the process is complete,
reboot the computer and check if the other Windows installation is
Restoring the registry with ERDNT - Emergency Scenario II
Situation: Windows fails to boot up in normal and safe mode, and you
have no other working operating system installed on your PC.
The following two rescue methods require that your PC is configured so
that it can boot from CD. See your BIOS documentation for more
1. Bart's PE Builder
Use another computer with Internet access and CD burning capabilities
to download this free program from the Internet (do a Google search
for it), which will create a bootable Windows CD with full access to
all drives (including NTFS). Boot from this CD, open the File
Management Utility and follow the directions in "Emergency Scenario I"
to run ERDNT and restore the registry.
2. The Windows Recovery Console (Windows 2000 and higher)
Note that you can use this method only if you saved the registry
backup inside the Windows folder, and that using this procedure only
the system registry is restored. This should however get you back into
Windows, from where you can run the ERDNT program to restore user
registries, if necessary.
- Boot your system from the Windows 2000/2003/XP CD-ROM.
- At the welcome screen, press "R" (Windows 2000: "R" then "C").
- Type in the number of the Windows installation you want to repair
(usually 1), then press ENTER.
- Type in the Administrator password (leave blank if you are unsure
what it is) and press ENTER.
- At the command prompt type
or whatever you named your restore folder, then press ENTER.
- If you enabled automatic registry backup on system boot during ERUNT
installation and want to restore one of these backups, type
cd autobackup <ENTER>
- If you created subfolders for different registry backups (for
example, with the different creation dates), type
to see a list of available folders, then type
cd foldername <ENTER>
where foldername is the name of a folder listed by the dir command,
to open that folder.
- Now type
batch erdnt.con <ENTER>
to restore the system registry from that folder.
and remove the CD from the CD-ROM drive. The system will now reboot
with the restored registry.
I have never tried any of the above, this is just copied from the file that Erunt puts on the system when you install it, which you have, but cannot get to. Since I can, I figured I would share it. I think
it is just step number 2 in the second scenerio that you need to concern yourself with since you do have the XP disk.
I wish you the best of luck.I just noticed that Louis said a registry fix was not the way to go. He is way more knowledgeable about this stuff than I am so I would go with what he says.
Edited by Stang777, 10 April 2010 - 08:57 PM.