If you don't have a XP CD, how did you build the UBCD4WIN iso file?

Did you follow the instructions on the UBCD4WIN web site on how to build it? It's very, very specific and detailed:
http://www.ubcd4win.com/howto.htm

2. Windows® XP CD, with at least Service Pack 1 (SP2 is highly recommended)
If your CD does not have SP1 or SP2 included on it you can easily "slipstream" a Service Pack using a program called AutoStreamer. Instructions for slipstreaming are on the "slipstreaming" page of this site. Do not use a source that was "modified" by programs that claim to stream hotfixes or drivers into your XP CD. Only use a true XP CD or one that is slipstreamed properly with only an official Service Pack from Microsoft.

TIP- Unsure about what Service Pack your CD has? Look at the root of your XP CD for files ending with a .SP1 or .SP2 extention. Whichever extension you find tells you what Service Pack is installed on your CD.

Working Solution! - Without swapping HDD, re-installing windows or losing data.

Hi folks, I recently had trouble with the registry in Win MCE. - Missing '....config\system' on start-up.
I couldn't use the recovery console as Windows was not detecting my RAID NTFS HDD.
I followed the MS instructions.... which created the new problem "lsass.exe, password not valid, reboot).

This is what worked for me.

Requirements:
1) System Restore enabled in windows.
2) NTFS Dos Pro and a Boot CD/Disk - Preferabbly Hiren's Boot C (which is loaded with all the apps you need). Hiren's Boot CD (http://thanki.tk or torrentspy.com)
3) Don't use the system.bak file located in windows\repair.
4) Don't assume that either of the _regis~1, ~2, ~3 or ~4 files in a RP\Snapshot folder are the registry files you need - they are not.


Steps.
1) In your BIOS, set 1st boot device to CD.
2) Reboot with Hiren's Boot CD (or similar).
3) Load NTFS DOS Pro. (in the NTFS Ext2Fs Tools menu on the Hiren CD). You can skip Checkdisk
(use pro instead of regular NTFS as it lists long file name details)
4) Once loaded, the 2nd last line of text indicates the new temporary drive letter of your HDD, in my case D:
5) switch to D:
6)i) You will probably have short file and folder names displayed instead of long when you 'dir', however the full name appears once you are in the directory.
6ii) type (without quotes ' cd system~1\_restor~1\rp95\snapshot '
(RP = restore point, the higher the number the more recent the rp. if this doesn't work for you, try a lower/older number).
7)type ' dir/p ' to list the files in the directory. (use /p, not /w for this)
8) Look through the text (file details) on the right to find ' _REGISTRY_MACHINE_SYSTEM '. Look across to the left, this is the file size (which should be fairly large, eg 5,365,760 in my case). To the left again is the actual file name, in my case ' _r62e7~1 '.
9) You may need to tap the space bar again to finish listing all the files.
10) Once at the command prompt, type ' copy _r62e7~1 d:\windows\system32\config\system '
11) Overwrite = Y
12) Reboot (CTR+ALT+DEL)
13) Load windows.... sucessfully hopefully.

If this doesn't work for you, try;

A) Reload NTFS PRO, go back to the same RP\snapshot directory and copy the following files (copy the actual file name, not the details text).

_REGISTRY_MACHINE_SOFTWARE
_REGISTRY_MACHINE_SAM
_REGISTRY_MACHINE_SECURITY
_REGISTRY_MACHINE_DEFAULT

copy (overwrite) the above files to their corresponding file in the config directory (step 10). eg _REGISTRY_MACHINE_SOFTARE copy over ' software '

Above are all the files that Microsoft recommends you overwrite..... however MS caused my lsass loop in the first place!

B) Try copying the _REGISTRY_MACHINE_SYSTEM from another restore point directory.

Thank you to ealier contributor's in this thread who pointed me to the restore point directory, I would still be stuck if not for your posts. Previous methods in this thread may work for other people, just not me with my setup.

I solved my lsass issue last night, after stressing out for a day. So I thought I'd join this forum just to ad the process that worked for me. If the above steps help even 1 person then I'm happy.

- Good Luck.

Working Solution! - Without swapping HDD, re-installing windows or losing data.

Hi folks, I recently had trouble with the registry in Win MCE. - Missing '....config\system' on start-up.
I couldn't use the recovery console as Windows was not detecting my RAID NTFS HDD.
I followed the MS instructions.... which created the new problem "lsass.exe, password not valid, reboot).

This is what worked for me.

Requirements:
1) System Restore enabled in windows.
2) NTFS Dos Pro and a Boot CD/Disk - Preferabbly Hiren's Boot C (which is loaded with all the apps you need). Hiren's Boot CD (http://thanki.tk or torrentspy.com)
3) Don't use the system.bak file located in windows\repair.
4) Don't assume that either of the _regis~1, ~2, ~3 or ~4 files in a RP\Snapshot folder are the registry files you need - they are not.


Steps.
1) In your BIOS, set 1st boot device to CD.
2) Reboot with Hiren's Boot CD (or similar).
3) Load NTFS DOS Pro. (in the NTFS Ext2Fs Tools menu on the Hiren CD). You can skip Checkdisk
(use pro instead of regular NTFS as it lists long file name details)
4) Once loaded, the 2nd last line of text indicates the new temporary drive letter of your HDD, in my case D:
5) switch to D:
6)i) You will probably have short file and folder names displayed instead of long when you 'dir', however the full name appears once you are in the directory.
6ii) type (without quotes ' cd system~1\_restor~1\rp95\snapshot '
(RP = restore point, the higher the number the more recent the rp. if this doesn't work for you, try a lower/older number).
7)type ' dir/p ' to list the files in the directory. (use /p, not /w for this)
8) Look through the text (file details) on the right to find ' _REGISTRY_MACHINE_SYSTEM '. Look across to the left, this is the file size (which should be fairly large, eg 5,365,760 in my case). To the left again is the actual file name, in my case ' _r62e7~1 '.
9) You may need to tap the space bar again to finish listing all the files.
10) Once at the command prompt, type ' copy _r62e7~1 d:\windows\system32\config\system '
11) Overwrite = Y
12) Reboot (CTR+ALT+DEL)
13) Load windows.... sucessfully hopefully.

If this doesn't work for you, try;

A) Reload NTFS PRO, go back to the same RP\snapshot directory and copy the following files (copy the actual file name, not the details text).

_REGISTRY_MACHINE_SOFTWARE
_REGISTRY_MACHINE_SAM
_REGISTRY_MACHINE_SECURITY
_REGISTRY_MACHINE_DEFAULT

copy (overwrite) the above files to their corresponding file in the config directory (step 10). eg _REGISTRY_MACHINE_SOFTARE copy over ' software '

Above are all the files that Microsoft recomends you overwrite..... however MS caused my lsass loop in the first place!

B) Try copying the _REGISTRY_MACHINE_SYSTEM from another restore point directory.

Thank you to ealier contributor's in this thread who pointed me to the restore point directory, I would still be stuck if not for your posts. Previous methods in this thread may work for other people, just not me with my setup.

I solved my lsass issue last night, after stressing out for a day. So I thought I'd join this forum just to ad the process that worked for me. If the above steps help even 1 person then I'm happy.

- Good Luck.

Hi there;

I was browsing your thread in search of an answer to this very problem, and I would like to say that there are some very good answers.

I would just like to suggest something I did just recently

Run off a live cd like Ultimate Boot CD :
http://www.ubcd4win.com/howto.htm for instructions on how to make one
Boot to this disk, run registry restore, select a date that is a couple of days before problem, then whammo you are fixed
I had this exact problem and had it fixed in less than an hour, without reinstalling or difficult manual copying