Trying to recover. File missing. Need help.

  • Thread starter Thread starter Jose
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Jose

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My laptop, which runs XP Home SP3, appears to have corrupted registry hives.

The computer will get stuck in the black Windows XP screen and if I try to

boot in Safe Mode it gets stuck in the mup.sys file.



I researched the problem and have found the apparent solution is to replace

the registry hives with the ones in the c:/windows/repair folder.



The "system" file that is supposed to be in the repair folder is not there.



I researched that and nobody seems to have a straight answer. Every thread

answer I read is sending the OP all over the place but not answering the

question directly.



Where can I find another copy of the c:/windows/repair/system file?



I looked at my desktop (which runs XP Pro) and there is no "system" file in

the c:/windows/repair folder either. The only file in there (just like in my

laptop) is system.bak



Can someone tell me where can I find another copy of the "system" file that

is supposed to be in the repair folder?



Thanks
 
"Jose" wrote in message

news:549E330A-C248-4988-8053-4E38D8B917CB@microsoft.com...

> My laptop, which runs XP Home SP3, appears to have corrupted registry

> hives.

> The computer will get stuck in the black Windows XP screen and if I try to

> boot in Safe Mode it gets stuck in the mup.sys file.

>

> I researched the problem and have found the apparent solution is to

> replace

> the registry hives with the ones in the c:/windows/repair folder.

>

> The "system" file that is supposed to be in the repair folder is not

> there.

>

> I researched that and nobody seems to have a straight answer. Every thread

> answer I read is sending the OP all over the place but not answering the

> question directly.

>

> Where can I find another copy of the c:/windows/repair/system file?

>

> I looked at my desktop (which runs XP Pro) and there is no "system" file

> in

> the c:/windows/repair folder either. The only file in there (just like in

> my

> laptop) is system.bak

>

> Can someone tell me where can I find another copy of the "system" file

> that

> is supposed to be in the repair folder?

>

> Thanks



The Repair folder is the only place where you will find a backup copy of the

registry files. However, it would probably useless because it does not get

updated automatically. It is likely to be several years old, which means

that it is out of step with the many updates that have happened since. Why

it disappeared I cannot say.



On Windows 7 (and perhaps on Vista), Windows updates the registry backup

files automatically about once a week. On WinXP/2000 you need to create a

scheduled task that does it for you. An even better method would be to

create an image of your installation, using a tool like Acronis DriveImage.

Unfortunately this won't help you retrospectively.
 
You can, in future, use ERUNT to backup the registry, and recover

http://www.larshederer.homepage.t-online.de/erunt/





"Jose" wrote in message

news:549E330A-C248-4988-8053-4E38D8B917CB@microsoft.com...

> My laptop, which runs XP Home SP3, appears to have corrupted registry

> hives.

> The computer will get stuck in the black Windows XP screen and if I try to

> boot in Safe Mode it gets stuck in the mup.sys file.

>

> I researched the problem and have found the apparent solution is to

> replace

> the registry hives with the ones in the c:/windows/repair folder.

>

> The "system" file that is supposed to be in the repair folder is not

> there.

>

> I researched that and nobody seems to have a straight answer. Every thread

> answer I read is sending the OP all over the place but not answering the

> question directly.

>

> Where can I find another copy of the c:/windows/repair/system file?

>

> I looked at my desktop (which runs XP Pro) and there is no "system" file

> in

> the c:/windows/repair folder either. The only file in there (just like in

> my

> laptop) is system.bak

>

> Can someone tell me where can I find another copy of the "system" file

> that

> is supposed to be in the repair folder?

>

> Thanks
 
On May 20, 10:33 am, Jose wrote:

> My laptop, which runs XP Home SP3, appears to have corrupted registry hives.

> The computer will get stuck in the black Windows XP screen and if I try to

> boot in Safe Mode it gets stuck in the mup.sys file.

>

> I researched the problem and have found the apparent solution is to replace

> the registry hives with the ones in the c:/windows/repair folder.

>

> The "system" file that is supposed to be in the repair folder is not there.

>

> I researched that and nobody seems to have a straight answer. Every thread

> answer I read is sending the OP all over the place but not answering the

> question directly.

>

> Where can I find another copy of the c:/windows/repair/system file?

>

> I looked at my desktop (which runs XP Pro) and there is no "system" file in

> the c:/windows/repair folder either. The only file in there (just like inmy

> laptop) is system.bak

>

> Can someone tell me where can I find another copy of the "system" file that

> is supposed to be in the repair folder?

>

> Thanks



There is probably not a problem with your mup.sys file. XP has gotten

past mup.sys and is trying to load the next item It is what comes

after mup.sys that is the causing the system to hang - usually (but

not always) i8042prt.sys.



Sometimes with this issue, you just need to wait with mup.sys on your

screen... - sometimes you have to wait a while for XP to get past the

file after mup.sys. I would wait several minutes. This may allow you

to get past the problem and resume troubleshooting whatever your issue

is.



Describe your current peripheral situation - keyboard, mouse, printer,

USB devices, wireless, etc. and start suspecting them first. Anything

new added since the system last booted successfully?



Unplug everything except the keyboard (if a desktop). You only need a

keyboard to boot, and try your Safe Mode operation with just a KB and

see what that does for you. If you boot okay, start plugging things

back in one at a time until your system hang again and then you have

identified the culprit and can fix the real problem. I usually find

it is some mouse issue. If you have a wired keyboard - use it. Get

down to the simplest configuration so you can at least boot.



Depending on what led up to the situation (any new hardware. drivers,

updates?), from the F8 boot menu you can also choose:



Last known good configuration



which will load the system using the information from the last time XP

thinks it booted successfully, then you can undo whatever caused you

to get it this situation in the first place - usually uninstalling

whatever you installed or undoing your last change.



If your system (appears to) hang up mup.sys and then reboots after

some period of waiting (I would wait several minutes), from the F8

boot menu choose:



Disable automatic restart on system failure



and let the system fail again. If you see the blue screen of death,

it will probably have all the information you need to figure out what

is wrong and fix it.



There is nothing wrong with mup.sys and probably nothing wrong with

your registry. Copying in old registry files is tedious and exacting

and may not be necessary at all. It is a good exercise though.



This is why when you Google the problem of a system hanging on

mup.sys, you see so many ideas of what to try and they never work

because nobody seems to understand that the problem is not mup.sys at

all - it is what comes after it.
 
Sounds like a W32/Alureon-variant rootkit infection.



What anti-virus application or security suite is installed and is your

subscription current? What anti-spyware applications (other than Defender)?

What third-party firewall (if any)?



Has a(another) Norton or McAfee application ever been installed on the

computer (e.g., a free-trial version that came preinstalled when you bought

it)?



Was the computer fully-patched at Windows Update before this problem started

and is KB979683 or KB977165 found in Add/Remove Programs (after making sure

the Show Updates box at the top is checked)?





Jose wrote:

> My laptop, which runs XP Home SP3, appears to have corrupted registry

> hives.

> The computer will get stuck in the black Windows XP screen and if I try to

> boot in Safe Mode it gets stuck in the mup.sys file.

>

> I researched the problem and have found the apparent solution is to

> replace

> the registry hives with the ones in the c:/windows/repair folder.

>

> The "system" file that is supposed to be in the repair folder is not

> there.

>

> I researched that and nobody seems to have a straight answer. Every thread

> answer I read is sending the OP all over the place but not answering the

> question directly.

>

> Where can I find another copy of the c:/windows/repair/system file?

>

> I looked at my desktop (which runs XP Pro) and there is no "system" file

> in

> the c:/windows/repair folder either. The only file in there (just like in

> my

> laptop) is system.bak

>

> Can someone tell me where can I find another copy of the "system" file

> that

> is supposed to be in the repair folder?

>

> Thanks
 
=?Utf-8?B?Sm9zZQ==?= wrote in

news:549E330A-C248-4988-8053-4E38D8B917CB@microsoft.com:



> My laptop, which runs XP Home SP3, appears to have corrupted

> registry hives. The computer will get stuck in the black Windows

> XP screen and if I try to boot in Safe Mode it gets stuck in the

> mup.sys file.

>

> I researched the problem and have found the apparent solution is

> to replace the registry hives with the ones in the

> c:/windows/repair folder.

>

> The "system" file that is supposed to be in the repair folder is

> not there.

>

> I researched that and nobody seems to have a straight answer.

> Every thread answer I read is sending the OP all over the place

> but not answering the question directly.

>

> Where can I find another copy of the c:/windows/repair/system

> file?

>

> I looked at my desktop (which runs XP Pro) and there is no

> "system" file in the c:/windows/repair folder either. The only

> file in there (just like in my laptop) is system.bak

>

> Can someone tell me where can I find another copy of the "system"

> file that is supposed to be in the repair folder?

>

> Thanks



First of all, I agree with Jose. Try his suggestions. If you still

want to access a backup copy of the registry, I suggest that you follow

the procedure in the article:



"How to recover from a corrupted registry that prevents Windows XP from

starting"





But since you don't have a c:\windows\repair\system file, you can make

the following changes to the Microsoft Procedure:

1) Download and create a Live Linux Boot disk [such as Knoppix]

Knoppix:

2) Boot your system from this CD. This has several advantages in that

Linux ignores Windows file protections. Because of this, you can

skip "Part 1" of the KB article above and go straight to Part 2.

You can perform the Step 2 tasks using Linux to access your

backed-up copy of the registry in your "System Volume Information"

directory. Also, if all else fails, you can use the Linux disk to

backup your files to a USB drive or to a networked drive before

you re-install Windows.



Good Luck,

John
 
On May 20, 3:17 pm, John Wunderlich wrote:

> =?Utf-8?B?Sm9zZQ==?= wrote innews:549E330A-C248-4988-8053-4E38D8B917CB@microsoft.com:

>

>

>

>

>

> > My laptop, which runs XP Home SP3, appears to have corrupted

> > registry hives. The computer will get stuck in the black Windows

> > XP screen and if I try to boot in Safe Mode it gets stuck in the

> > mup.sys file.

>

> > I researched the problem and have found the apparent solution is

> > to replace the registry hives with the ones in the

> > c:/windows/repair folder.

>

> > The "system" file that is supposed to be in the repair folder is

> > not there.

>

> > I researched that and nobody seems to have a straight answer.

> > Every thread answer I read is sending the OP all over the place

> > but not answering the question directly.

>

> > Where can I find another copy of the c:/windows/repair/system

> > file?

>

> > I looked at my desktop (which runs XP Pro) and there is no

> > "system" file in the c:/windows/repair folder either. The only

> > file in there (just like in my laptop) is system.bak

>

> > Can someone tell me where can I find another copy of the "system"

> > file that is supposed to be in the repair folder?

>

> > Thanks

>

> First of all, I agree with Jose.  Try his suggestions.  If you still

> want to access a backup copy of the registry, I suggest that you follow

> the procedure in the article:

>

> "How to recover from a corrupted registry that prevents Windows XP from

> starting"

>  

>

> But since you don't have a c:\windows\repair\system file, you can make

> the following changes to the Microsoft Procedure:

> 1) Download and create a Live Linux Boot disk [such as Knoppix]

>    Knoppix:

> 2) Boot your system from this CD.  This has several advantages in that

>    Linux ignores Windows file protections.  Because of this, you can

>    skip "Part 1" of the KB article above and go straight to Part 2.

>    You can perform the Step 2 tasks using Linux to access your

>    backed-up copy of the registry in your "System Volume Information"

>    directory.  Also, if all else fails, you can use the Linux disk to

>    backup your files to a USB drive or to a networked drive before

>    you re-install Windows.

>

> Good Luck,

>   John



Well, if the system will not boot, there is no way to implement that

KB. The KB It is a good exercise though and actually does work as

described, but probably not needed fo this silly problem.



Using Last known good will load the registry snapshot created from the

last successful boot, but still leave the "what caused it" problem to

be resolved. Self inflicted I would imagine.



If Jose wants to implement the KB, he must boot on something and you

can boot and then implement the KB from the XP Recovery Console - a

bootable Recovery Console CD can be created by following this tutorial

also from from Jose (too many Joses).



http://www.bleepingcomputer.com/forums/topic276527.html



I am still suspecting a keyboard or mouse driver update (something

USB) that lead to the yet to be specified issue. I can purposely make

my system appear to hang on mup.sys and BSOD any day, any time. We

are good friends now - this mup.sys hang situation and I.
 
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