Help, please! Stop: c000021a {fatal error} the process windows logon system ended unexpectedly with the status of 0xc0000034 (0x00000000) (0x00000000)

Similar Questions

• Stop: c000021a {fatal error} the windows logon system process ended unexpectedly with the status of 0xc0000034 (0x00000000) (0x00000000) need help please system does not start

  Hi my HP Compact computer running with windows Xp professional recently had security tool, antimelware doctor and I kind of have got rid of him, he also put some viruses on the winlog thing and I could not get rid of it with antivirus software that I don't know the name of, Malwarebytes' Anti-Malware and AVG 2011 I did a scan antivirus in safe mode with AVG(in command prompt mode) and he put a bunch of virus the virus volt, I'm out there and there was a running called 2008 command prompt and I clicked on output and it says that this program is not complete (or something similar) save all unfinished work before going out and me did not run this command prompt , so I left Malwarebytes' Anti-Malware and avg, then I restart my computer and we get the blue screen of death say stop: c000021a {fatal error} unexpectedly finished process windows logon process system with the status of 0xc0000034 (0x00000000) (0x00000000) system will reboot, and whenever it restarts, it says the same thing, I can't use safe mode cause it resets and starts normally any help pls I have files I need this computer?

  You can create a bootable XP Recovery CD of Console and replace the file, but it may be easier for you to make boot CD of a Hren.

  When you start the Hiren's CD, choose the XP Mode of Mini and it has an interface in XP style Explorer where you can find and replace the winlogon.exe suspicious or missing file.

  There should be a copy of winlogon.exe here:

  c:\Windows\System32\dllcache

  Rename your current c:\windows\system32\winlogon.exe file (if it exists) and copy / paste the replacement of c:\windows\system32\dllcache.  If you do not see here, search your HARD drive and find one.  Another possibility (depending on your environment) is c:\windows\ServicePackFiles\i386, or c:\i386 d:\i386...

  You just need to replace the file winlogon.exe somehow.

  When you are finished replacing, restart as usual (remove the CD bootable of course).

  With the help of Hiren, you can also copy offshore on an external device (USB key or HARD drive), all personal security files.

  Do you have a Hiren BootCD you can download here:

  http://www.hirensbootcd.NET/

  On the left, click on download, scroll down, choose the latest version, the download link is a little hard to see.  It is at the bottom of the page, above the drop for older versions and looks like this (click this component to download the ZIP file):

  Direct HTTP mirror + Torrent, Torrent Magnet

  Click the "Live HTTP Mirror" link to start the download and save the ZIP file on your desktop of somewhere that you can remember.

  The ZIP file is large, so the download will take probably some time to complete.  Then unzip the download to extract the Hirens.BootCD.ISO file that will be used to create your new bootable CD.

  Create a bootable CD. ISO file is not the same as simply copying the. File ISO onto a blank CD.  You must use software that includes how to burn a. ISO to a CD to create a bootable CD.

  File ZIP the Hiren is the file BurnToCD.cmd that you can double-click to launch it.  The BurnToCD.cmd will use the file BurnCDCC.exe to burn the. ISO file onto a blank CD using your existing CD burner.  You can also use your own burning software as long as your software is able to create a bootable CD. ISO file.  More modern burning programs can create a bootable CD. ISO image.  Create a CD from an ISO image bootable is not the same as just the file on a CD burning.

  If you need a simple and CD burning, this is a free software popular software:

  http://www.ImgBurn.com/

  Here are some instructions for ImgBurn:

  http://Forum.ImgBurn.com/index.php?showtopic=61

  It would be a good idea to test your new bootable CD on a computer running.

  You may need to adjust the computer BIOS settings to use the CD-ROM drive as the first device to boot instead of the hard drive.

  These adjustments are made before Windows tries to load.  If you miss it, you will need to restart the system again.

  When starting on the Hiren's CD, you will see a menu of options.  Choose Mini XP.  It will appear while Windows is loading and you will be presented with a desktop computer that has the look and feel of the interface of Windows Explorer, you are already accustomed to using.

  Using the Mini XP, you can access Internet, maneuvering around your system, search for files, copy files, replace the files and run the scans for malware, edit the text files (like the c:\boot.ini) etc.

  There are dozens of free and useful tools included in the CD that can be used to repair your system or copy your important personal files on another device (like a USB device or an external drive) in the case where you just give up and decide to reinstall your XP (I hope that you will not make this decision).

  Do, or do not. There is no test.

  I need YOUR voice and the points for helpful answers and propose responses. I'm saving for a pony!

• c000021a error fatal system ended unexpectedly with a status of 0 = oxc0000135 (0x00000000 0x00000000) the system has been shut down.

  This error is repairable? When I turn on my computer market, I always blue screen and error message. I do not see that my mouse shows thanks

  Mary

  Most of the errors are correctable. It's just that the BSOD errors are usually harder to fix than many others. Two reasons for this. One is that the system is usually more difficult with the result that the investigative process is hindered access. The other is that the initial error report indicates only the general nature of the problem and not the specific cause. If the system has been activated to provide a more detailed memory dump reports they can be analyzed. The problem for most users is that they do not have the computer skills to take on the task.

  Move to the specific problem you have. The document in the link below gives tips on the clues or pointers for the bug check code: 0xc000021a

  http://msdn.Microsoft.com/en-us/library/ff560177 (v = VS. 85) .aspx

  Please answer a few questions.

  1 how long have you had the problem?

  2 do you have added or removed any hardware or software during the period, shortly before the problem occurred. If Yes please provide details.

  3. are you able to access the computer in safe mode without the error occurring? My second link provides details on how to access safe mode if you have not done this before.

  4. your computer is a desktop or a laptop?

  5. What is your computer brand and model?

  6. what you precisely through a Windows XP CD? Not all computer manufacturers provide a CD. Your answer to question 5 could lead me to discover an alternative so you worry if you do not have a CD.

  The link following gives information on the Menu Options, Advanced Windows, you can try the last known good Configuration suggested in the first link I have provided.

  http://support.Microsoft.com/kb/315222

  Hope this helps, Gerry Cornell

• Equium A60: XP blue screen of death: Stop: c000021a - fatal error message

  "Stop: c000021a {fatal system error} the Session manager initialization system.
  ended unexpectedly with the State 0xc000026c (0x00000000 0x00000000). The system has been shut down. »

  This is the message I get on a blue screen. I can't start the computer. His tent to restart conineously after this error message. What could be wrong someone can help.

  my system is equium A60, running on windows xp sp2 installed very recently.

  Thanks in advance.

  You should check the support microsoft help you dosent his good companion
  This, you should get started http://support.microsoft.com/kb/317189

• STOP: c000021a {fatal system error} the initial session process or system ended unexpectedly with status 0 x 000000001 (0xc0000034 0x0010038c). The system has been shut down

  I am trying to start my Dell Inspiron 1525, but get the following blue screen message "STOP: c000021a {fatal system error} the initial session of the process or system process ended unexpectedly with status 0 x 000000001 (0xc0000034 0x0010038c).» The system was stopped.

  I tried to boot mode without fail & startup repair but nothing helps, always the message, any help would be really appreciated as all my College work is stored on the laptop.
  What about Otto
  Windows vista Home basic

  Hello

  Check with Dell Support, their online documentation, diagnosis and ask in the forums about known issues.

  Dell support
  http://support.Dell.com/

  Dell support drivers - product manual & warranty Info (left side) - and much more
  http://support.Dell.com/support/index.aspx?c=us&l=en&s=DHS

  Dell forums
  http://en.community.Dell.com/forums/

  =========

  STOP: 0XC000021A

  Can be a difficult problem to solve, and you indeed need a technical help in a real store of the computer
  (not the leeks and the glances at a BestBuy or other BigBox stores) or system manufacturer support.

  Cause

  This error occurs when a subsystem of mode user, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), irremediably compromised and security can not be guaranteed. In response, the operating system goes into kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS. Therefore, it is one of the rare cases where the failure of a user mode service can stop the system.

  Incompatible system files can also cause this error. This can happen if you restored your hard disk from a backup. Some backup programs may skip restoring system files which they determine are in use.

  
  Solve the problem

  Run the kernel debugger is not useful in this situation because the error occurred in a user mode process.

  Resolve an error in the user-mode device driver or system, third-party application service: Because the bug 0xC000021A control occurs in a user mode process, the most common culprits are third-party applications. If the error occurred after the installation of the new or updated device driver or service system, third-party applications, the new software should be removed or disabled. Contact the manufacturer of the software on a possible update.

  If the error occurs during the system startup, restart your computer, and then press F8 to character-based menu that displays the choice of operating system. In the Windows Advanced Options menu that results, select the last known good Configuration option. This option is most effective when a pilot or a service is added at a time. If the error is not resolved, try to manually remove the offending software. If the system partition is formatted with the (FAT) file allocation table, use a MS-DOS boot disk to access the hard disk of the computer. If the system partition is formatted with the NTFS file system, you may be able to use Safe Mode to rename or remove the defective software. If the defective software is used as part of the start-up procedure of the system Safe Mode, you must start the computer by using the Recovery Console to access the file. If a room newly installed if material is suspected, remove it to see if that fixes the problem.

  Try running the emergency recovery disk (ERD) and allow the system to repair any errors that it detects.

  Solve a problem of file system do not match: If you have recently restored your hard disk from a backup, check if there is an updated version of the backup/restore program available from the manufacturer. Make sure that the latest Windows Service Pack is installed.

  STOP: 0XC000021A<-- read="" this="">
  * 1314.html http://www.faultwire.com/solutions-fatal_error/Status-System-Process-terminated-0xC000021A-

  -----------------------------------------------------------------------

  Look in the Event Viewer to see if something is reported on those.
  http://www.computerperformance.co.UK/Vista/vista_event_viewer.htm

  MyEventViewer - free - a simple alternative in the standard Windows Event Viewer.
  TIP - Options - Advanced filter allows you to see a period of time instead of the entire file.
  http://www.NirSoft.NET/utils/my_event_viewer.html

  -------------------------------------------------------------------------

  It's my generic bluescreen convenience store - you can try Mode safe mode as suggested in article
  above - repeatedly press F8 that you start. Disks of Vista are probably necessary - if you do not have to try
  repair, you can borrow a friends because they are not protected against copying. You can also buy the physical
  discs of the machine system good cheap that you already own windows (you will need to reinstall
  If necessary). You can also repair disks on another computer.

  Here are a few ways to possibly fix the blue screen issue. If you could give the blue screen
  info that would help. Such as ITC and 4 others entered at the bottom left. And all others
  error information such as codes of STOP and info like IRQL_NOT_LESS_OR_EQUAL or PAGE_FAULT_IN_NONPAGED_AREA and similar messages.

  As examples:

  BCCode: 116
  BCP1: 87BC9510
  BCP2: 8C013D80
  BCP3: 00000000
  BCP4: 00000002

  or in this format:

  Stop: 0 x 00000000 (oxoooooooo oxoooooooo oxoooooooo oxooooooooo)
  Tcpip.sys - address blocking 0 x 0 00000000 000000000 DateStamp 0 x 000000000

  It is an excellent tool for displaying the blue screen error information

  BlueScreenView scans all your minidump files created during "blue screen of death," collisions
  Displays information on all the "crash" of a table - free
  http://www.NirSoft.NET/utils/blue_screen_view.html

  BlueScreens many are caused by old or damaged, in particular the video drivers drivers however
  There are other causes.

  You can do mode if necessary safe or the Vista DVD command prompt or
  Options recovery if your system is installed by the manufacturer.

  How to start on the System Recovery Options in Windows 7
  http://www.SevenForums.com/tutorials/668-system-recovery-options.html

  You can try a system restore to a point before the problem started when one exists.

  How to do a system restore in Windows 7
  http://www.SevenForums.com/tutorials/700-system-restore.html

  -------------------------------------------------------------------------

  Start - type this in the search box-> find COMMAND at the top and RIGHT CLICK – RUN AS ADMIN

  Enter this at the command prompt - sfc/scannow

  How to fix the system files of Windows 7 with the System File Checker
  http://www.SevenForums.com/tutorials/1538-SFC-SCANNOW-Command-System-File-Checker.html

  How to analyze the log file entries that the Microsoft Windows Resource Checker (SFC.exe) program
  generates cbs.log Windows Vista (and Windows 7)
  http://support.Microsoft.com/kb/928228

  The log can give you the answer if there is a corrupted driver. (Says not all possible
  driver problems).

  Also run CheckDisk, so we cannot exclude as much as possible of the corruption.

  How to run the check disk at startup in Windows 7
  http://www.SevenForums.com/tutorials/433-disk-check.html

  -------------------------------------------------------------------------

  Often drivers up-to-date will help, usually video, sound, network card (NIC), WiFi, part 3
  keyboard and mouse, as well as of other major device drivers.

  Look at the sites of the manufacturer for drivers - and the manufacturer of the device manually.
  http://pcsupport.about.com/od/driverssupport/HT/driverdlmfgr.htm

  Installation and update of drivers under Windows 7 (updated drivers manually using the methods above
  It is preferable to ensure that the latest drivers from the manufacturer of system and device manufacturers are located)
  http://www.SevenForums.com/tutorials/43216-installing-updating-drivers-7-a.html

  How to disable automatic driver Installation in Windows Vista - drivers
  http://www.AddictiveTips.com/Windows-Tips/how-to-disable-automatic-driver-installation-in-Windows-Vista/
  http://TechNet.Microsoft.com/en-us/library/cc730606 (WS.10) .aspx

  -------------------------------------------------------------------------

  How to fix BlueScreen (STOP) errors that cause Windows Vista to shut down or restart
  quit unexpectedly
  http://support.Microsoft.com/kb/958233

  Troubleshooting Vista Blue Screen, error of JUDGMENT (and Windows 7)
  http://www.chicagotech.NET/Vista/vistabluescreen.htm

  Understanding and decoding BSOD (blue screen of death) Messages
  http://www.Taranfx.com/blog/?p=692

  Windows - troubleshooting blue screen errors
  http://KB.wisc.edu/page.php?id=7033

  -------------------------------------------------------------------------

  In some cases, it may be necessary.

  Startup Options recovery or Windows 7 disk repair

  How to run a startup repair in Windows 7
  http://www.SevenForums.com/tutorials/681-startup-repair.html

  How to start on the System Recovery Options in Windows 7
  http://www.SevenForums.com/tutorials/668-system-recovery-options.html

  How to create a Windows 7 system repair disc
  http://www.SevenForums.com/tutorials/2083-system-repair-disc-create.html

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle="" -="" mark="" twain="" said="" it="">

• Stop: c000021a {(erreur système fatale) stop: c000021a.} Windows logon process system ended unexpectedly with the status of 0xc0000080(0x00000000) (0x00000000) system has been arrested. Help, please.

  Unrecoverable system error, stop: c000021a. Logon windows system process finished in unexpected ways with the State 0xc0000080(0x00000000) (0x00000000) system was stopped.
  Technical information
  Stop 0x000000F4 (0 x 00000003, 0 85504088, 0x85504EEC, 0x8095AAOE)
  It is a model of MSI U135DX MS N014 laptop, Windows xp home edition and have a cd player.
  Help please... Thank U.

  Triple LOL.

  You have no idea... you.

  Try your advice.

• STOP: c000021a {fatal system error} The Windows Logon process system ended unexpectedly with the status of 0xc0000034 (0x00000000 0 x 0000000) the system has been turned off.

  Please provide me with a solution for the problem mentioned above. I tried Googling for the same thing, but there are not enough posts about it.

  Check and see if the default Microsoft GINA has been replaced, to edit the registry, you have to mount the boot disk not in another machine to Windows or use a disc like UBCD4Win PE.  See here for easy to follow instructions on how to modify remote installation no Startup registry: http://www.rwin.ch/xp-live/regedit.htm

  If GINA is ok, you can try to restore the computer to an earlier date, or you might have to do and an upgrade on the spot (relocation) of the operating system.

  See here for more information: http://support.microsoft.com/kb/156669

  John

• Error - c000021a {fatal system error} the Windows logon system process ended unexpectedly with status 0f 0 x 0000034 (0x00000000 0x00000000), not able to start the computer.

  Original title: computer will not open a session.

  c000021a {fatal system error} the windows logon process prosses systewm ended unexpectedly with status 0f 0 x 0000034 (0x00000000 0x00000000).

  Hi macduf123,

  You did it all change hardware or software on your machine before this problem?

  The STOP 0xC000021A error occurs when Winlogon.exe or Csrss.exe.

  You can follow this link and check if you are able to start correctly on the desktop.

  How to solve an error "STOP 0xC000021A.

  Hope the helps of information. Please post back and we do know.

  Concerning
  Joel S
  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Help! Laptop won't start up. BSOD "Stop: c000021a {fatal system error}...". »

  I have a laptop Dell Inspiron 1750. Since Sept 09.

  Starting from Saturday, may 8 my system won't start up

  I turn it on it loads the Dell logo, loads the windows logo, and then flashes a blue screen for a split second (the blue screen flashes so quickly that it is difficult to read what he says, so I recorded it and it comes up with "STOP: c000021a {fatal system error} the verification of a knownDLL failed.") system process finished unexpectedly the status of 0xc000012f (0x0007c220 0x00000000) the system has been shut down.) and restarts after the dell logo loading again it goes to a black screen with the options to launch start up repair or start windows normally.

  I have Launced the Startup Repair, after loading files and checking for problems it says then Startup Repair cannot repair this computer automatically. I made the diagnosis and he says there is no problem, I have contatced dell as it is still under warranty but they said this isn't a hardware problem, it is a software problem and infact NOT covered by the warranty and I have to pay £60 to have the support of the software. I don't have a recovery disc and tried to restore the system to an earlier stage. But no luck!

  Was hoping someone here, perhaps a solution. Please please please help!

  Thank you very much
  Ship

  Status 0xc000012f is "STATUS_INVALID_IMAGE_NOT_MZ" - "the file specified image did not have the correct format, it did have an initial MZ." (anecdote: binary windows start with MZ - the initials of Mark Zbikowski - who was a promoter of the MS-DOS product)

  That, with "a knownDLL verification failed."  Basically telling you that you have corrupted files on your system.  Any chance you are able to boot into safe mode or safe mode with command prompt to run SFC/scannow?  Can you somehow shoot out of the system event logs and check the events worthy of attention?  Are you all able to run chkdsk on the drive through the command prompt in the System Recovery Options?

• I get a msg of error: Stop: c000021a {fatal system error} subsystem of the system

  Hello, Hello...

  I have an error when whenever I start my laptop and it will return to market after a few seconds after that boot then BSOD (blue screen of death) appear with msg like this...
  STOP: c000021a {fatal system error} the process window system subsystem ended unexpectedly with status c0000005 (0x75e9ad15 0x0052f240). Then the BSOD stuck there and forcing me to press the reset button to restart the laptop... What is the cause that happen to my system of the laptop? Sometimes it restarts automatically when I try to install a new version of the Media Player Classic player, open a video in Media Player Classic, open the Opera web browser and some kind of emulator PSP (Playstation Portable).

  In addition, I noticed there is some sort of process that runs without warning when I try to monitor using Process Explorer, the process is "wscript.exe". before that my laptop is not running this kind of process, but it in courses run once I started a laptop after I installed Dev C++ application, DOSBox (emulator of game back) & Opera web browser.

  How can I solve this problem?

  I use

  Acer TravelMate laptop computer
  Intel Celeron
  Microsoft Windows XP Professional SP2

  p/s: sorry for my bad English.

  You get the error because Winlogon.exe or Csrss.exe is a failure.  The cause could be installed incompatible system files, program service pack installation has failed, the backup did not work right, or an incompatible third-party program has been installed.  From the sounds of it, you'll first want to take a look at the programs that run at startup, as is usually the last of those above problems that caused the problem.

  Here are some sources: http://support.microsoft.com/kb/156669 and http://www.computing.net/answers/security/stop-c000021a-fatal-system-error/20937.html
  I hope this helps!

• STOP: c000021a {fatal system error} the Session management cannot create protected prefixes

  My Dell Inspiron 1545 gives me this message and not going anywhere

  «STOP: c000021a {fatal system error} The Session handle cannot create protected prefixes system process finished in unexpected ways with the status of 0xc000003a (0x00000000 0x00000000).» The system has been shur downwards. »

  Any suggestion on how to solve this problem? Thank you

  If all those who are unable to work, (they have not for me)...    I have a Win7 pro running Toshiba Satalite, and after a few weeks to get slowly mad and furious... I did...

  Went to the toshiba Web site updated BIOS drivers.

  installed (all automatically)

  Restarted

  Fixed
  ------------------------------------------------------
  all together took about 3 minutes. man, I was happy...

  Here is the link to your BIOS updated

  http://support.Dell.com/support/downloads/DriversList.aspx?c=us&CS=19&l=en&s=DHS&OS=WW1&OSL=en&SystemID=INSPIRON1545&CATID=-1&impid=-1

  I hope this works...

• Stop c000021a {fatal system error} status 0x00000000 (0 xC0000001 0x001003c0)

  I get an fatal system error when you try to start my dx gateway running windows vista.

  I get the following error.

  Stop c000021a {fatal system error} status 0x00000000 (0 xC0000001 0x001003c0)

  I tried Windows vista in safe mode and still getting error

  I tried running it the way of error recovery by selecting launch startup recovery and still get this error.

  We have not recently installed new software.

  Help!

  Jeff

  Hello

  Clamping, minor corrosion (which is deleted in the process), or
  other problems can be solved by reinstalling components. Of course cleaning
  dust bunnies can also be productive.

  I'm happy to have helped. Sounds like you were doing a few very good troubleshooting!

  (If a response has been the solution please mark as 'response' or if it was useful)
  Please, mark it as "Found this useful - Me Too. Help others find the
  solutions to follow.)

  Move every day, go further

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

• STOP: c000021a {fatal system error}

  on startup, I get the messsage

  STOP: c000021a {fatal system error)

  the session system process manager ended unexpectedly with the State Oxc000026c (OX00000000 Ox00000000) initialialization.

  the system has been shut down. I can get into the Setup menu and the menu of safe mode but nothing else.  I'm a little computer literat but need help.

  the laptop worked well, but a little slow with a message saying not enough disk space.

  When I clicked on stop, he came with updates and downtime that I said OK and she stops with no other message.  in operation today and has received the above message.

  Hi paulwin73,

  · What is the service pack installed?

  Follow the steps in the link that contains information about the cause of the error and the resolution for the same below: how to solve an error "STOP 0xC000021A": http://support.microsoft.com/kb/156669

  With regard to:

  Samhrutha G S - Microsoft technical support.

  Visit our Microsoft answers feedback Forum and let us know what you think.

• Error blue screen Stop: c000021a {fatal system error}

  I am unable to get my computer after the Windows XP screen without a screen blue, continues to restart.

  I was able to get to the Windows Advanced Options menu and was able to "Disable automatic restart in the event of system failure" to get the full error message.
  Stop: c000021a {fatal system error}
  The Session Manager initialization system process ended unexpectedly with the State 0xc000026c (0x00000000 0x00000000).
  The system has been shut down.

  Twice I was able to get in "Safe Mode", words ran across the screen as they will normally in "Safe Mode", but both times the computer restarted again.

  I tried to launch a repair several times with a borrowed Windows XP disc, every time after the repair, he says that the system contained errors, but had been repaired, but the problem persists, just guard computer restart, stop with the error again in a loop.  Hope this helps.

  CHKDSK c: /p detects errors, I ran this command before asking for help on this site... ut as an update... I contacted Microsoft, given that the problem was an update... I received a new operating system CD, crossed the same repair with the new CD with Microsoft... Talked to five different people... Kings different phone calls... the Division to the top to the box start... BSOD... But I won't give up easily... I'm back in my BACK screen... nd was finally able to repair the operating system... The problem was due to the CD have installed IE6 repair who wrote too my IE9... including the confusion in the trunk-to the top.... went on the computer is not not able to recognize Windows Explorer... etc etc etc.

  Nine days later... I'm back running... Phew!

  Thanks for trying to help...

  I work on computers in 10 - 20 Sep... It was rough...

• computer does not start message "autochk.exe not found" followed of "stop: c000021a (fatal system error.

  computer does not start.

  the screen message is: "autochk.exe not found."

  second message is: "stop: c000021a (fatal system error)".

  «the session Manager initialization process ended unexpectedly with the State 0xc00003a (0x00000000 0x00000000).»

  "the system is stopped.

  Hi Bobzurcher,

  ·         Did you do changes on the computer before the show?

  I suggest you to consult the article in the Microsoft Knowledge Base and check.

   

  How to solve an error "STOP 0xC000021A.

  http://support.Microsoft.com/kb/156669

  Let us know if that helps.