Computer Support Forum

Error 0xc000021a

Question: Error 0xc000021a

Hi,

My brother turned on is computer and got this code 0xc000021a , I wondered if anybody can help please.

He tells me that he has tried all different options but nothing works.

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Preferred Solution: Error 0xc000021a

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

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Question: 0xc000021a error

I was using my computer everyday till about a week ago.  I woke up to find my computer turned off.  Maybe a power outage in the middle of the night.  I hit the power button and it went to the loading screen with the rotating icon at the bottom of the screen.Since then i have tried almost all ideals i could find on the web.  I can not download or go into files as i can not load windows to do so.  i cant even get into safe mode unless you have a way that works.  I have alot of information on my computer and would like to keep it.

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Question: Error 0xc000021a

Dear BC,
 
My system is windows 8.1, notebook is asus k55a, 4GB RAM.
 
I had some problem in that notebook:
 
When i turn it on after metro style display got blue color with that ,,Error 0xc000021a" title.
 
After i turn it of manually and after it booted fine.
 
what happened, why it had such error first?
 
Please need ur advises.
 
Thanks in advanced.

Answer:Error 0xc000021a

Sometimes BSODs just happen. As long as the fault isn't chronic there is no worry.

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Question: Error: 0xc000021a

Please assist with error on blue screen 0xc000021a it keeps going to the diagnosing and restart. What do I do to fix this and work as normal? Please help

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Hello ,
I have a Surface RT with Windows 8. I have the dreaded "blue screen of death" with a 0xc000021a error. I understand Microsoft no longer provides support for the Surface RT. In the simplest terms possible (because I am a computer neophyte) how can
I fix this? If this error was caused due to a MicroSoft update, do I really have to pay MicroSoft support to walk me thru the steps to undo their mess?

Help...

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Hello,
I have installed Windows 8 Pro on my PC and on my Laptop. The problem is since yesterday the laptop ist showing the error 0XC000021A. It only writes that my PC ran into a problem and needs to restart. After a restart it just writes the system must be recovered and if I click on "Recover" it only shows the Win8 logo and nothing happens. I tried it several times and always get the same error.
The biggest Problem is I cant access the BIOS and change the boot device, so its not so easy to reinstall Windows. I always have to open the device and to format the hard disk on an other PC.
Is there any way to solve this problem without reinstalling Windows? I cant access the PC so all the other ways written in the internet don't work in my case.
Here you can see a photo of the error: http://tinyurl.com/cx5n48f
Please help me!

blackmax07

Answer:Bluescreen error 0xC000021A

Why can't you access the BIOS? I suspect a hardware problem because of this statement.
If you can get into Windows, Please provide this information so we can provide a complete analysis: https://www.eightforums.com/bsod-cra...tructions.html

If you can't get into Windows, please start with these free, bootable diagnostics: Initial Hardware Diagnostics
Post back with the results and we'll move on from there.

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My computer type is thinkpad x240NOw, my computer existed the error 0xc000021a, and i cannot go any mode such as recover mode, safe mode. I don't know what should i do. Please, anyone helps me or gives suggestions for this situation.      

Answer:Please help about the computer error 0xc000021a

What operating system?  First thing, I would run built-in diagnostics.  (hit F10 at start-up)

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By "dead" I mean it is not doing anything.
Hi. I started my Samsung laptop today to find the entitled error. No "help" I have come across has worked, especially on microbrain's website. It says it is collecting some "error info" and has not moved from 0% since it started nearly 25 minutes ago. As soon as I saw it I knew it was a fake non-error, not doing anything, and certainly not fixing anything.
Pressing F8 is ignored by this wonderful piece of nothing, and I can't make the drive work via a USB dock using another windose OS on another drive, either.
How can I fix it?
Thanks.

Answer:'0xc000021a' dead error

I'm on mobile so I can't see the edit button.
I don't have this installation disc and I can't make a boot USB disk, either, because I can't get into it st all. It keeps on either going to the Samsung splash screen with the rotating icon then not doing anything, yo the error/error info-"collecting" screen immediately where it reboots immediately and alleges to try again, or it mentions it is "preparing automatic repair", which I don't know why it's called that because it does NOTHING automatically/by default, and does NOT repair ANYTHING.

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Hey guys I keep getting the following BSOD 0xc000021a error at boot on Win 8.1 Pro wmc x64. I cannot log on to windows, as I have computer background, I have tried to diagnose it myself but unfortunately I am at a dead end and need help. The only way I can gain access is by running Win 8.1 with driver signature enforcement disabled at start-up.

My computer is Vaio VPCCB15fa Win 8.1 pro x64 and Win 7 ult. x64 dual boot.

Answer:0xc000021a error at boot Win 8.1 Pro wmc x64

I have run the dm log collector but the zip file it outputs is insanely small, well here it is.

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So it all started last night when i accidentally tripped on my power cord, unplugging it from tthe tower during the login screen. At first, I thought nothing of it, and I just restarted the computer. But unfortunately I was met with the BSOD with that error code. All of the online solutions I have encountered that don't involve removing all my files or using a windows 8 installation disk I have tried.
So then after the BSOD I restart and get to a screen saying automatic repair failed. I try to refresh the PC- no luck. I'm definitely not resetting my PC and losing all my files so I go into advanced options. Foolishly I have no backup USB or anything so I try a system restore. Nothing happens, same old BSOD. Then I try the various command console solutions i found in the advanced settings command prompt.All of them don't work and give me a reply saying that the image was not found or "drwtsn32.exe" was not found in the image specified or whatever. It is always prefaced with "x:\windows\system32", not C:\. I cannot start in safe mode and disabling driver signature enforcement also didn't work. Any help before i just buy a windows 8 installation disk would be greatly appreciated.

Answer:Windows 8 0xc000021a Error

I have an asus btw, so the uefi/bios is kind of weird.

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I kept my computer on over night and I accidentally hit the print screen button. I have a special program called 'Greenshot' so it overlays the screen with a grid region selector and lets you drag and save. I didn't drag and save so I left it like that over night.

As soon as I woke the computer up it froze the entire screen nothing could be down. Also a message pop up about failed nvidia drivers. I decided to just force reset my computer since their was nothing I could do.

Boot it up and got all the way to the logo and loading screen. A few seconds after I BSOD with the error 0xc000021a.

Reset the computer and the auto repair screen came up. I won't let me reinstall windows w/ keeping personal files, safe mode doesn't help nor does the force drivers option, I have no idea if windows have "Boot from last known boot" or have it verity all system64 files like windows 7. Nothing work in the repair menu but the command prompt which is label X Drive instead of C drive by default.

I heard windows 10 likes to secretly update bios so I don't know it that could be the problem. Anyways I have had boot loops in the past where if I plug too many usb devices in the back IO panel the computer will just boot loop.

Answer:BSOD error 0xc000021a

Hi Zersuit,

Welcome to the 10forums.

As you are unable to boot proper into the system, please try the bootable tests from Hardware Diagnostics

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Alright so here I go... I get home from work and boot my PC, only to find it wasn't responding to anything and the clock dissappeared from the welcome screen. So, as most other people would, I hard reset it as it would not respond to the power button.

However, I seem to have created a problem for myself... I'm now stuck in a bootloop in which the PC refuses to fix itself. I start it... I get error 0xc000021a in a bsod and it reboots to try and repair, in which that fails. I have tried a 2 separate system restores, both 28th and 23rd of January, to no avail.

Sorry that I cannot create any dump of any kind, as I can't even access any part of my PC.

I've tried other methods such as the DISM command, only to get some error stating that I'm supposed to use an /online command. Eh?
I've tried booting into safe mode, only to get the exact same error.
I cannot refresh or reboot as I do not have access to a disk or flash drive at this point (my kid sister snapped my disc in a fit of rage, irrelevant but worth noting.)

I can't even chkdsk because it says something about the HDD being locked?

For future reference, this is a custom built PC so there's no telling what I did.

My system specs are as follows:
Gigabyte GA-H81M-HD3 mobo
Windows 8.1 Pro 64-bit
8gb DDR3 ADATA Ram.
Core-i5 4460 @3.2gh.
Sapphire HD 5850 1gb
500w psu.
2x 500gb WD Caviar green and 1x 500gb Seagate.

I've got 4 fans cooling the system so I doubt anything is fried?

I've literal... Read more

Answer:Error 0xc000021a unsolvable?!?!?!

Try booting with "force drivers to have signature disabled" option. Here's the guide: How to Disable Driver Signature Verification on 64-Bit Windows 8.1 (So That You Can Install Unsigned Drivers)

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sfcdetails.txt
dism.log

Hi,
I have been struggling with error 0xc000021a for a while now and can not find a way to fix the issue. I tried using sfc /scannow, but all I get is a message saying:

Windows Resource Protection found corrupt files but was unable to fix someof them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. Forexample C:\Windows\Logs\CBS\CBS.log. Note that logging is currently notsupported in offline servicing scenarios.

the sfcdetails is attached.

I also tried using dism /online /cleanup-image /restorehealth , but get Error: 3017 when at around 75% during the process.

dism log file is attached as well

I tried resetting my laptop, but get Error: There was a problem resetting your pc

The only way I have found to get past error 0xc000021a is to disable driver signature enforcement, but this is only a temporary solution. Every time I restart or reboot my pc it will give me the error which is really annoying. I have went through the repair my computer scans many times and every time it will say that it couldn't repair the pc. The hardware scans never find any issues as well.

Answer:BSOD, error 0xc000021a

Attention:

Before posting a BSOD thread, please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions

If you need to add new information, please make a new post in your initial BSOD thread. Please do not make an extra new thread.

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sfcdetails.txt
dism.log
DESKTOP-T1C520B-Tue_08_01_2017_104958_15.zip

Hi,
I have been struggling with error 0xc000021a for a while now and can not find a way to fix the issue. I tried using sfc /scannow, but all I get is a message saying:

Windows Resource Protection found corrupt files but was unable to fix someof them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. Forexample C:\Windows\Logs\CBS\CBS.log. Note that logging is currently notsupported in offline servicing scenarios.

the sfcdetails is attached.

I also tried using dism /online /cleanup-image /restorehealth , but get Error: 3017 when at around 75% during the process.

dism log file is attached as well

I tried resetting my laptop, but get Error: There was a problem resetting your pc

The only way I have found to get past error 0xc000021a is to disable driver signature enforcement, but this is only a temporary solution. Every time I restart or reboot my pc it will give me the error which is really annoying. I have went through the repair my computer scans many times and every time it will say that it couldn't repair the pc. The hardware scans never find any issues as well.

Answer:BSOD, error 0xc000021a

Attention:

Before posting a BSOD thread, please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions

If you need to add new information, please make a new post in your initial BSOD thread. Please do not make an extra new thread.

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the problem is with my acer laptop till yesterday it was working properly until suddenly 2day when i try starting windows normally a massage appear saying "insufficient system resources exit to complete the API"i tried logging into safe mode or any other mode this msg appearedSTOP: c000021a {Fatal System Error}The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)The system has been shutdown. i read in other sites that i can fix it with command prompt which i cannot access from the F8 menu and i think i need a boot disk for it :sthen there was another solution that is to setup a new xp since my laptop has no floppy disk drive ill have to use a cd boot disk for windows xp plz if anybody has a quicker solution or know how to download the data for the boot xp cd plz help and try to keep it simple coz am a new in all this also if there is a way to get the data off the laptop hard drive onto my pc plz tell me coz i need this data ASAP :S

Answer:"stop 0xc000021a" Error

Hi Kivvi, and welcome to BleepingComputer.

How about trying a system restore.

Start> All Programs> Accessories> System Tools> System Restore. Choose one of the highlighted dates on the calendar prior to the problem and follow the prompts.

Let us know if you have any trouble.

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I've downloaded Windows 8 Developer Preview With Developer Tools 64bit Image file and burn it into a usb hdd.
Whenever i want to install it says like that..........
Your PC ran into a problem that it couldn't
handle, and now it needs to restart.

You can search for the error online: 0xc000021a
Can any one help me to resolve the problem.............My Laptop is Dell Latitude E5410. Core i3 CPU, 6GB of Ram, Intel HD Graphics,

Answer:Installation error 0xc000021a

May be a faulty USB stick.

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Ok, I clicked 'update and restart' while turning off my Surface RT, and instead of booting my OS, Windows collecte 'some error information' and restarted to a BitLocker error screen asking me for my recovery key. So, I went on the microsoft website with my phone and found the recovery key, typed it in and tapped 'Continue', but it eventually says 'Automatic Repair couldn't repair your PC'. I tap 'Advanced options' and then 'Continue:Exit and continue to Windows RT'', but I just end up at the original BitLocker error screen. If I go to 'Troubleshoot' and try 'Refresh your PC', it says 'the drive where Windows is installed is locked. Unlock the drive and try again. I tap 'Cancel' (the only option) and try 'Advanced options' then 'Automatic Repair', I get the same error screen as before, so I tap 'Startup Settings' and then 'Restart'. Eventually, I get a BitLocker screen that says ''you must enter your recovery key to access Startup Settings: to protect the privacy of your data, BitLocker has prevented the unlocking of your drive. You'll need to enter the recovery key.' Then there's nothing but some text at the bottom telling me to 'press enter or the windows key'. The problem here is that when I press enter or the Windows key, nothing happens. It just stays on that screen for a minute or so, and then ... Read more

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Blue screen with a message " your system did not start correctly"I tried to reset but afer few minutes into reset I got another message saying unable to resetCould you please help?Many thanks

Answer:Error code 0xc000021a

Hi,Your laptop came with Windows 8.1 64 bit from factory.https://support.hp.com/in-en/document/c04556587Have you created HP Recovery USB using HP Recovery Manager after first setup of this notebook?I see that your current installed OS is Windows 10, so have you upgraded and activated to Windows 10 successfully?If you've upgraded Windows, HP recovery partition might have got corrupted - this is the reason for the message "unable to reset".Now, please perform extensive hard drive and memory tests from System Diagnostics UEFI by tapping F2 or ESC key as soon as you power on laptop. Let it finish.Report back with resultsRegardsVisruth

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Thankfully I have a secondary laptop to report my issues on. 
My problem is located on my Vizio all in One PC. Model is CA 27.  I am running windows 8.  Installed from windows store.
Using microsoft security essentials.  I do not have any other antivirus program or software installed.
 
I received notification that updates were available and ready for installation (I have the computer notifying me when windows updates are available for installation) - all other program updates are a notification only, I believe.
 
So, I hit the install updates and restart pc. Once the pc initiated the restart phase, the black screen with windows logo appears, with the spinning circle.  It then shoots to a blue screen with the following message:  Your PC ran into a problem restarting.  We are collecting information for you (then the percentage bar of information collection).  Below this notification is the following BSOD errorr number:  0xc000021a. 
It then loops to Preparing Automatic Repair, Diagnosing your PC, then sends me to Blue Screen of Automatic Repair:  Your PC did not start correctly.  Press restart to restart your PC, which can somtimes fix the problem.  You can also press advnaced option to try othe roptions to repair your PC.
 
I hit restart and it loops back again (reread my beginning post).
I hit advanced options, I have continue, troubleshoot and turn off PC.
So when I hit continue, it loops back t... Read more

Answer:BSOD with error 0xc000021a

I just now attempted to use the start up repair option on the advanced options tab.  Naturally, the pc couldn't be repaired.  the Log file listed is:
C:\WINDOWS\System32\Logfiles\Srt\SrtTrail.txt

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I kept my computer on over night and I accidentally hit the print screen button. I have a special program called 'Greenshot' so it overlays the screen with a grid region selector and lets you drag and save. I didn't drag and save so I left it like that over night.

As soon as I woke the computer up it froze the entire screen nothing could be down. Also a message pop up about failed nvidia drivers. I decided to just force reset my computer since their was nothing I could do.

Boot it up and got all the way to the logo and loading screen. A few seconds after I BSOD with the error 0xc000021a.

Reset the computer and the auto repair screen came up. I won't let me reinstall windows w/ keeping personal files, safe mode doesn't help nor does the force drivers option, I have no idea if windows have "Boot from last known boot" or have it verity all system64 files like windows 7. Nothing work in the repair menu but the command prompt which is label X Drive instead of C drive by default.

I heard windows 10 likes to secretly update bios so I don't know it that could be the problem. Anyways I have had boot loops in the past where if I plug too many usb devices in the back IO panel the computer will just boot loop.

Answer:BSOD error 0xc000021a

Hi Zersuit,

Welcome to the 10forums.

As you are unable to boot proper into the system, please try the bootable tests from Hardware Diagnostics

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My Lenovo keeps going around in a circle of issues. Only over 12 months. I've tried everything but I still get the same error.  

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my sister did force shut down to my PC while he was updating and now I have that error 0xc000021a I have tried safe mode ,autoreprair someone know how to solve it

Answer:Windows 8.1 0xc000021a error

What is the exact error message?
 
Can you boot into Windows at all?

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Help!
 
I reboot my PC last week as the computer seemed not responding and I ended up like this:
 
First, it was a black screen with 'autochk program not found - skipping AUTOCHECK
 
Then, the blue screen appeared, revealing the error code 0xc000021a
 
The computer automatically restarted and directed me to the automatic repair screen. Choosing restart will cause the PC to repeat the error again.
 
I tried the method stated in http://appuals.com/best-fix-steps-fix-error-0xc000021a/ but it does not work.
 
I downloaded GTA V from steam on the day before the PC crashed and I ran it. This was the only program I download recently before the PC crash
 
Please Help.
 
James

Answer:Help! Windows 10 won't start. Error: 0xC000021A

Start with these free, bootable hardware diagnostics:  http://www.carrona.org/initdiag.html

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I went to use my computer this afternoon and it locked up and now I get "error 0X000021A" I have been unable to get it to boot into safe mode or anything else. It has an SSD and I have the original HD which I installed and the computer will boot to that. However it has windows 8 as the operating system. I had done the upgrades to 8.1 and 10 but they are not on the HD? Is there any way to get the windows 10 loaded again? If not, I will continue to get by with Windows 8. I can't get the log information because it won't boot up.
CPeter

Answer:Computer won't boot, get error 0xc000021a

See if you can boot this Win10PE, if you can use HDTune and do the following please.


Diagnostics Test

 HDD TEST


   Note
Run the tests on all hard drives/partitions!


   Note
Please run HDTune first, in the order posted!
Run HDTune to
check the health,scan for errors, no quick scan but full scanrun a benchmark.
It may take some time, but please take the time you need to perform it properly.
When above is done please make screenshots of the following
the health,the error scan,the benchmark incl. following
transfer rate,access time,burst rate,cpu usage.

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I tried different methods in this error like, refresh pc(can't refresh),system restore (can't restore), CMD - bootrec/fixboot, bootrec/scanos.....etc. and SFC/scannow(didn't work) , I tried the startup settings where you can see F1-F9, tried safe mode to disable driver signature options but it won't work, same error pops up in the startup (0xc000021a). I tried using the windows 8 installer- repair my computer option- but startup settings is not there. i can't go to safe mode. please help how to fix this error without losing my files. THANK YOU

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I was trying to restore to earlier ate n to pc went to blue screen look online later for error 0XC000021A n keeps restarting it goes from On to esc blue scren to black windows booting or rotating beads ro error 0XC000021A screen. I tried F8 but i can pnly access windows starting screen from system recovery either wise it never reaches Starting Windows point. Help

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Yesterday I successfully installed Windows 10 as per Microsoft instructions only to find today an error message stating “Error 0xc000021a Terminate yes or no”. I clicked yes thinking this was the correct course of action, but unfortunately, I have not been able to connect to Windows since.
When starting my PC a message appears stating there has been a problem and will restart in a few moments. An automatic repair screen appears followed by a screen asking “Choose your keyboard layout”. This screen is frozen and I’m unable to use the mouse or touchscreen. I can proceed no further.
My PC affected is an HP Touch smart 310
Regards
George Briggs

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Hi

I upgraded from Windows 7 to Windows 10 and it was working fine for a few days but now whenever I try to boot it up I get BSOD with error code 0xc000021a.

I've tried the following 'fixes':

System restore --- Runs for a few minutes and then says "Could not restore your computer. No changes were made"

Clicking on any of the advanced startup options --- BSOD

Reinstalling windows 10 with a usb --- Results in it going into circles with this messagea "The computer started using the Windows installation media. Remove the installation medial and restart your computer so that Windows starts normally. Then, insert the installation media and restart the upgrade. [Do not select iCustom [advanced]I to perform an upgrade. iCustom [advanced]I installs a new copy of Windows and deletes your programs and settings.)"

I've taken the usb out and restarted the computer several times, even called Microsoft Technical Support. They had no idea what to do.

I used to be able to access the command prompt and I tried everything suggested in this article here https://neosmart.net/wiki/0xc000021a/. The reason I say "used to" is because things recently got alot worse when I changed the boot order and now it just turns black after the bios screen. I've tried to restore the BIOS setup to default settings and I also tried everything suggested in this article 3 Ways to Reset Your BIOS - wikiHow but nothing works.

To recap, it started out as an unsolvable BSOD with... Read more

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Help!
 
My PC worked this morning but when I returned from work it now displays on the main Windows load up screen.
 
 
"fatal error c0000034 applying update operation 3 of 20816 (_00000...)"
 
It then says that PC ran into problem and needs to restart and displays error message 0xc000021a
 
Automatic repair/Diagnosing pc screen runs but then stats it can't repair it. It gives other options like a refresh etc which I tried.
Also mentions Log file D:\Windows\System32\Logfiles\Srt\SrtTrail.txt
 
I don't have a recovery or back up and I have some very important music files I have been working on so cannot do a reboot.  
 
Please help!!!
 
 
Graeme

Answer:HELP! computer won't boot error: 0xc000021a

Start the computer in Safe Mode -
Start Command Prompt with Administrator Privileges -
Type the command -
a. DISM /image:C:\ /cleanup-image /revertpendingactions
b. cd to Windows\WinSxS folder
c. move pending.xml pending.old
Restart the computer in Normal Mode and you will be able to work in the
computer else again start the computer in Safe Mode and try to perform a
System Restore to a working date
 

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Hi
I upgraded from Windows 7 to Windows 10 and it was working fine for a few days but now whenever I try to boot it up I get BSOD with error code 0xc000021a.
I've tried the following 'fixes':
System restore --- Runs for a few minutes and then says "Could not restore your computer. No changes were made"
Clicking on any of the advanced startup options --- BSOD
Reinstalling windows 10 with a usb --- Results in it going into circles with this messagea "The computer started using the Windows installation media. Remove the installation medial and restart your computer so that Windows starts normally. Then, insert the installation media and restart the upgrade. [Do not select iCustom [advanced]I to perform an upgrade. iCustom [advanced]I installs a new copy of Windows and deletes your programs and settings.)"
I've taken the usb out and restarted the computer several times, even called Microsoft Technical Support. They had no idea what to do.
I used to be able to access the command prompt and I tried everything suggested in this article here 0xC000021A Fix for Windows XP, Vista, 7, 8, 8.1. The reason I say "used to" is because things recently got alot worse when I changed the boot order and now it just turns black after the bios screen. I've tried to restore the BIOS setup to default settings and I also tried everything suggested in this article 3 Ways to Reset Your BIOS - wikiHow but nothing works.
To recap, it all started 2 days af... Read more

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This morning, I needed to check my emails so tried booting up my laptop only for the BSOD saying "Your PC ran into a problem and needs to restart. We are just collecting some error info and then we will restart for you." I allow it to reach 100% but whenever it starts to restart my laptop just freezes. No matter how many times I boot my computer this always seem to happen which is why I am unable to follow the BSOD posting instructions. Is there anyway I can fix this as I need certain data that is on my hard drive?

Answer:BSOD error 0xc000021a crash

Diagnostics Test

 HDD TEST

Run SeaTools to check the integrity of your HDD. http://www.sevenforums.com/tutorials...s-how-use.html


   Note
Do not run SeaTools on an SSD as the results will be invalid.

Run chkdsk http://www.sevenforums.com/tutorials...isk-check.html

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Hello all, Im new here an need some help. I am trying to fix a friends Dell Dimension 8300. It was filled with tons of viruses. I got most of them, but after a restart I keep getting the BSOD error 0xC000021A followed by Cx0000034. I can't boot into any of the options when I press F8. I still get the message regardless. His CD drive doesn't work, so I cant boot from a disk. I removed the HD and put it in an enclosure and hooked it up to my computer to try and diagnose the problem from my computer. Is there anyone that can help me Can I replace files on his HD from my Windows XP Home Edition SP2 that will make it work again?? (He is running XP home SP2). I have not added any hardware or Ram. Just Windows live onecare to remove the viruses. Thanks in advance for whoever replies!

And yes, I have search all the knowledge bases and this forum and nothing has worked so far.
 

Answer:BSOD 0xC000021A Fatal Error

For anyone who has or will have the same problem. Here is what I did.

I opened up the tower for the Dell 8300 and took out the HD and the CD drive. (the CD drive didnt have the right drivers and can't find them, but it ran).

I plugged the IDE cable (master) into the CD drive and power cable.

Then I plugged the Slave end of the IDE cable into the HD.

Under settings (F2) I changed all the settings to "Auto" under the drive configuration settings. And changed the boot order to boot from the CD drive.

Then I inserted the Win XP CD into the drive, and rebooted.

Then I pressed "R" after the Win XP CD loaded all the files. The "R" is the repair Win XP installation. Everything loaded onto the HD without any data loss! The computer finally boots up now. Now I just have to put it back together LOL.
 

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Relevance 54.12%

Using Windows 8.1 digital purchase, no CD.

This classic error just started happening yesterday. Had no problem with the pc in the morning, came home late and when I tried to turn it on it didnt got pass the error screen. All I remeber doing in the morning is an adobe flash update which I did not install, just dowloaded to install later. Then nothing else, I was using firefox and did nothing else.

Tried almost everything to solve it.
Every cmd command that is around.
Sfc scannow
Bcdedit into safe mode, with and without cmd, and bootmenu policy.

Pc just wont start in safe mode either.

Tried to restore to previous version, an error comes up saying it was not possible. Tried all three of the available dates.

Tried pressing F8 and starting safe mode from there and still no result.

None of the "repair" options work of course.

I can acsess the BIOS, on the gygabyte screen. Not sure what to chabge in there. Anyways, tried with "fast boot" and same error occurs.

The copy is a digital purchase, so no CD.

Any ideas? Appreciate it

Answer:Error 0xc000021A PC wont boot

Do you have any dump files under C:\Windows\Minidump ? If so, please copy them from that directory and upload them here. You should be able to copy them via command line if that's all you can access (if you're not sure how to do this, let me know and I can help) - either that, or you can burn a Linux LiveCD (such as Ubuntu or Mint), boot off of it, and use a GUI environment to copy them to an external storage device.

https://msdn.microsoft.com/en-us/lib...=vs.85%29.aspx
Try Last Known Good Config boot option.

When you ran SFC, did it find anything? Usually it will only repair stuff if you have a disc in the drive for it to reference.

Have you tried running a disk check? At the command prompt:
chkdsk c: /f /r

Seen somewhere that disabling Driver Signature Verification could also help: How to Disable Driver Signature Verification on 64-Bit Windows 8.1 (So That You Can Install Unsigned Drivers)

Failing those suggestions: https://support.microsoft.com/en-us/...?wa=wsignin1.0

As for not having a CD... Create installation media for Windows 8.1 - Windows Help

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I'm currently using my laptop for 2 months and today when I shut down my Dell Inspiron 15 a while ago and open it again after an hour I continuously get this error

:(
Your PC ran into Problem and it needs to restart. We're just collecting some error info, and then we'll restart for you.
If you'd like to know more you can search online later for this error. 0xc000021a


After it automatically restart it says


RECOVERY
Your PC couldn't start properly
After multiple tries, the operating system on your pc failed to start, so it needs to be repaired
Error code: 0xc0000001
You'll need to use the recovery tools on your installation media. If you don't have an installation media (like a disc or USB devices), contact your system administrator or PC manufacturer.


Whats should I do I encounter this problem about 3 hours ago help me please!!!
Thank you!!

Answer:HELP!!! Error Code 0xc0000001 and 0xc000021a!!!

What machine type and operating system do you have?
Is there any text with the error.
Try the following:  
- Boot to Safe Mode, if that works, then it is a problem with non-essential startup drivers, services, or startup programs.
- If no go, try Last Known Good Configuration, then run a malware and rootkit scans.

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Hello guys,

I was on chrome and all of a sudden I got a BSOD with the error code 0xc000021a

Dump file attached, thanks for all your help in advance. This community has always been amazing at helping me fix my BSOD issues. I appreciate it!

020815-18906-01.zip

The full memory dump https://www.dropbox.com/s/elu2e2yu39...EMORY.zip?dl=0

Answer:BSOD error 0xc000021a while on Chrome

Code:
2: kd> .bugcheck
Bugcheck code C000021A
Arguments ffffc000`4acdc200 00000000`00000000 00000000`00000000 00000000`00000000

2: kd> kn
# Child-SP RetAddr Call Site
00 ffffd000`258cc6b8 fffff803`e1da19a1 nt!KeBugCheckEx
01 ffffd000`258cc6c0 fffff803`e1d9b4fa nt!PopGracefulShutdown+0x2c9
02 ffffd000`258cc700 fffff803`e1b722b3 nt!NtSetSystemPowerState+0x269a
03 ffffd000`258cc840 fffff803`e1b6a700 nt!KiSystemServiceCopyEnd+0x13
04 ffffd000`258cc9d8 fffff803`e1fb88fd nt!KiServiceLinkage
05 ffffd000`258cc9e0 fffff803`e1eeb9f3 nt!PopIssueActionRequest+0x746bd
06 ffffd000`258ccaa0 fffff803`e1b121b2 nt!PopPolicyWorkerAction+0x63
07 ffffd000`258ccb10 fffff803`e1a93acc nt!PopPolicyWorkerThread+0xba
08 ffffd000`258ccb50 fffff803`e1b17440 nt!ExpWorkerThread+0x28c
09 ffffd000`258ccc00 fffff803`e1b6d0c6 nt!PspSystemThreadStartup+0x58
0a ffffd000`258ccc60 00000000`00000000 nt!KiStartSystemThread+0x16

2: kd> dc ffffc0004acdc200
ffffc000`4acdc200 646e6957 2073776f 7473756d 776f6e20 Windows must now
ffffc000`4acdc210 73657220 74726174 63656220 65737561 restart because
ffffc000`4acdc220 65687420 4f434420 6553204d 72657672 the DCOM Server
ffffc000`4acdc230 6f725020 73736563 75614c20 6568636e Process Launche
ffffc000`4acdc240 65732072 63697672 65742065 6e696d72 r service termin
ffffc000`4acdc250 64657461 656e7520 63657078 6c646574 ated unexpectedl
ffffc000`4acdc260 00450079 0064002e 006c006c 00740078 y.E...d.l.l.x.t.
ffffc000`4acdc270 03130208 ... Read more

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WinXP pro SP2
Can't log in safe mode nor normal mode. When trying to log in normally or safemode i get bsod with: c000021a Fatal System Error and cannot log in. error message: 0xc0000022

No system restore available as well lack of information received friend said she got after she opened a link on her facebook account

Computer infected with trojans, worms, adwares but cleaned with ultimate boot disk used Superantispyware.
I have no clue on how to solve this so any advice will be appreciated. If i could log into safemode would be great.

Dont want to lean towards formatting the HD but not sure if that is the route to take
 

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Asus S200E notebook, Win 8 Pro

I recently took in this laptop for my neighbor. The original idea was to scan and clean up the system. I set the laptop up in my office, ran an MSE full scan with no issues. Then ran a full Malwarebytes scan, which returned a few pups, which were removed.

After tending to other matters, I turned back to the laptop to find notification that there was a problem and windows had to restart. I ran another MWB scan only to have the system restart again. This time, the system tried to repair itself with automatic repair. No go. All reboots ended up back at the advanced startup options screen. No ability to restore the system image, no system restore. All I could get to was the cmd prompt.

Googling turned up all sorts of people with this issue (mostly older posts), but very few solutions.

This fix got my system booted again by removing pending update operations.

Apparently, an MS update is the source of the problem. To further reinforce this, until I turned off automatic updating, it would happen again. I also disconnected the machine from my network to revoke its internet access.

So the machine is no longer having start issues, but I'm not sure which update it is. I have 17 pending optional updates, but those haven't installed, so I doubt they're an issue.

I checked update history and there are 29 failed updates. All are dated within the period that the laptop has been in my possession.

I think it would be quit tedious to hide each one individ... Read more

Answer:Stop Error 0xc000021a after windows updates

Just in case it helps, here's a list of the failed updates. Again, using DISM to remove pending updates got me back into windows. Turning off Auto Update prevented reoccurrences:

Failed updates part 1:

Failed updates part 2:

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I own Dell laptop (windows 8 pro with media centre -- GENUNE , NO PIRATING,nothing cracked) which is hardly 3 years old.. it juat worked fine till yesterday evening.. i was playing saints row 4 and after closing that game noticed that the battery is about to get low to 10 %.. i just kept it in sleep mode to charge it later as the current was not there in home.. when i juat make it resume u juat got a blue screen saying "Your PC ran into a problem and needs to restart.We're collecting some info,and then we'll restart for u(100 % complete)" and iam stuck here with no change in screen in the meantime the area of the processor fan gets heated to such an extenct that we cant even able to touch it...

Answer:Windows 8 wont start with error : 0xc000021a

Try this:---http://www.regmender.com/how-to-fix-windows-8-error-0xc000021a.html

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I've literally tried everything. command codes. restore.... thought I had a restore point apparently I don't. It won't let me erase all my files and start over I am very frustrated 

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I have a g75vw Asus laptop which for the most part has worked fine. Late June the computer simply wouldn't boot into windows giving the error 0xc000021a next to the " " icon. This computer was originally using windows 7 but I upgraded soon after windows 8 was released in October. For about a week before the crashing, I had been using a ubuntu 12.04 live boot jump drive for learning python. It was after a linux boot that the computer crashed but I do not think the events are related. I had also installed connectify.me, a program that turns a laptops wi-fi adapter into a router which worked well for about a week before the crash. I have gone through all of the generic hoops including safe mode(s) system recovery using a usb flash drive, refresh, and the existent yet worthless self diagnosing tool. Microsoft was unable to help without a 100 dollar fee. 

Answer:Windows 8 doesn't boot. Error 0xc000021a

0xc000021a error usually means some issue with crucial system files, which could be actually caused by some bad hardware as well. I'd start with checking hard drive... Run hard drive diagnostics: http://www.bleepingcomputer.com/forums/topic28744.html/page__view__findpost__p__160520Make sure, you select tool, which is appropriate for the brand of your hard drive.Depending on the program, it'll create bootable floppy, or bootable CD.If downloaded file is of .iso type, use ImgBurn: http://www.imgburn.com/ to burn .iso file to a CD (select "Write image file to disc" option), and make the CD bootable.For Toshiba hard drives, see here: http://storage.toshiba.com/storage-services-support/warranty-support/software-utilities#diagnosticNote : If you do not know how to set your computer to boot from CD follow the steps here

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Asus S200E notebook, Win 8 Pro, UEFI.
I recently took in this laptop for my neighbor. The original idea was to scan and clean up the system. I set the laptop up in my office, ran an MSE full scan with no issues. Then ran a full Malwarebytes scan, which returned a few pups, which were removed.
After tending to other matters, I turned back to the laptop to find notification that there was a problem and windows had to restart. I ran another MWB scan only to have the system restart again. This time, the system tried to repair itself with automatic repair. No go. All reboots ended up back at the advanced startup options screen. No ability to restore the system image, no system restore. All I could get to was the cmd prompt.
Googling turned up all sorts of people with this issue (mostly older posts), but very few solutions.This fix got my system booted again by removing pending update operations.
Apparently, an MS update is the source of the problem. To further reinforce this, until I turned off automatic updating, it would happen again. I also disconnected the machine from my network to revoke its internet access.
So the machine is no longer having start issues, but I'm not sure which update it is. I have 17 pending optional updates, but those haven't installed, so I doubt they're an issue.
I checked update history and there are 29 failed updates. All are dated within the period that the laptop has been in my possession.
I think it would be quit tedious to hide each one individual... Read more

Answer:Stop Error 0xc000021a after windows updates

Microsoft pulled some botched updates after people got BSOD's. Specifically

KB 2982791, KB 2970228, KB 2975719, and KB 2975331

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I need help with this error code every time I run my laptop i get this blue screen and I don't know what to do. I researched online and some said something about a DVD which I don't have so can anyone help please!?

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I have a bootable USB with Windows 10, and another hard-drive plugged in running Windows 7. I have used the W7 boot to save my personal files which is lucky.

What I have tried:
- Boot to safe mode, disable driver signature
- Bootable USB -> "sfc /scannow /offbootdir=c:\ /offwindir=g:\windows" returns "Microsoft Resource Protection could not perform the requested operation"
- Registry replaced with backups

The SSD seems 'healthy'. Screenshot. CHKDSK passed but "failed to transfer log messages status 50". Are there logs I can locate manually on the troublesome drive and upload?

Any help would be appreciated, let me know if I can provide more information.

Answer:Computer boots to BSOD, error 0xC000021A

What is the K partition?

How much free space does each partition have? Not enough can cause quite some issues, at least 10-15% free space is recommended.

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Hello again!

I'm fixing a computer for a friend of mine. The computer at issue is running Windows XP, and suffers from the apparently not-so-uncommon STOP: 0XC000021a error with WINLOGON.exe. The computer was infected with a virus that caused the problem, NOT a hardware or new software installation.

I've spent hours researching a solution to the problem with no avail. Most guides reccommend reverting to the "Last Known Good Configuration". I tried this first, and it didn't work. He also has no Windows restore points to use.

The second common solution is to use a Windows XP CD to do a repair installation. As luck would have it, he doesn't have his Windows XP CD. I don't have one, either, since I've been using Vista for a while.

I've definitely isolated the problem to WINLOGON.exe, using DrWatson. I CAN boot the computer into Safe Mode, but I cannot boot it normally. The restart and BSOD occur roughly 1-2 minutes after the XP login screen appears.

Any tips or ideas?
 

Answer:Virus caused STOP: 0XC000021a error in XP

I'd also like to note that I've used AVG anti-virus and Spybot on the computer in Safe Mode, as well as Malware Bytes. I believe that the initial virus is gone, but I can't be sure until the problem is fully resolved.
 

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As this is my first post, I did look for similar issues, but didn't find one.


I am by no means a computer expert, but have grown up around them, and have used them actively for the majority of my life, so I have a fair familiarity with them.

I recently completed my first PC build, and everything worked flawlessly. Windows 10 installed and ran fine, all my hardware was recognized without issue, and everything updated automatically upon startup. My goal was a strictly game-centric build, no overclocking or anything.

I come home today, and realize that my PC goes into the windows auto repair immediately, prompting me with an 0xc000021a error. My motherboard debug LCD was prompting me with b2 (short) 99 (short) a2 (long) my manual is very vague about it, but from what I have gleaned, it has to do with my peripherals, so I unplugged mouse and keyboard (supposedly 99 represents one or the other), no luck.

I initially tried to do a system reset, and it got to about 20% (both with and without saving personal files) and said that the process could not be completed, so I resorted to safe mode.I tried booting the computer in safe mode just to try to make some progress, and then upon rebooting to enter safe mode, it froze. I let it sit for several minutes before I manually reset the computer. Now it cycles between black screen, and MSI logo back and forth. I can enter BIOS, if I time it right. I can't get it to bring up the windows advanced options screen (to do system... Read more

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Hi All..

I was reviewing my windows updates and saw two optional updates that were pending. First one was for MS office and it went through fine. Second one was some update to AMD vision control center. During that update screen flashed couple of times and went for re-start. After that I am unable to get into the system. I tried safe mode/debugging/low resolution mode etc.. But all resulted in the same blue screen with the 0xc000021a error message.

I am able to go only to command prompt. Nothing else (fortunately I am able to backup my photos by connecting external hard drive and using command prompt). I checked the SRT log file but it doesn't say any issue. All passed.

I tried refresh PC but it came back and said "There was a problem refreshing your PC. No changes made".

I tried using win ISO image bootable flash drive. It couldn't get through me in (I just tried with PC repair option when I booted with ISO image).

Is there a way I can get over it without re-installing?

Thanks in advance...

Krishnan V

Answer:Windows 8.1 - Error 0XC000021A after optional updates

try.....
STEP 1: Enter cmd
STEP 2: Now in the Command prompt just type System Root\System32\Drwtsn32.exe -I?. This process will register the Dr.Watson as the default system debugger which has to be -> Press Enter.
STEP 3: Again type System Root\System32\Drwtsn32.exe and then in the window choose the option which are Append to existing log file, Create crash dump and Visual Notification.
STEP 4: After setting it up restart the computer by pressing F8 in the startup and select Last known good configuration.
STEP 5: Once it got booted up, again restart the system in the normal and now try to look at your optional updates to make sure not to install whatever may have broken it before.

If this does not work then you may have to reinstall.

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Hi

I upgraded from Windows 7 to Windows 10 and it was working fine for a few days but now I get BSOD with error code 0xc000021a everytime I boot it. I've tried the following 'fixes':

System restore --- Runs for a few minutes and then says "Could not restore your computer. No changes were made"

Clicking on any of the advanced startup options --- BSOD

Reinstalling windows 10 with a usb --- Results in it going into circles with this message "The computer started using the Windows installation media. Remove the installation medial and restart your computer so that Windows starts normally. Then, insert the installation media and restart the upgrade. [Do not select iCustom [advanced]I to perform an upgrade. iCustom [advanced]I installs a new copy of Windows and deletes your programs and settings.)"

I've taken the usb out and restarted the computer several times, even called Microsoft Technical Support. They had no idea what to do.

I used to be able to access the command prompt and I tried everything suggested in this article here https://neosmart.net/wiki/0xc000021a/. The reason I say "used to" is because things recently got alot worse when I changed the boot order and now it just turns black after the bios screen. I've tried to restore to default and I also tried everything suggested in this article 3 Ways to Reset Your BIOS - wikiHow

Nothing works. Please help.

Answer:Cannot boot and no fixes works - Error 0xc000021a

If you have access to a working PC, the NeoSmart link might help: https://neosmart.net/wiki/0xc000021a/

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Hello, I got this error (0xc000021a) some times on my Lenovo ThinkPad S540 with win 8.1.I don't know if is a windows error or something else.What I can do to fix this error? Because it's very uncomfortable when i play music for hundreds of people and the pc is died... Thank You!Peter

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My X230 has recently started to display the 0xc000021a error code and blue screen when I restart.Any advice on how I remedy this situation?I am not a technical engineer so please no jargon.Thanks

Answer:X230 Error Code 0xc000021a on restart only.

Hi Michaeljsteer,
 
Welcome to Lenovo Community!
 
As per the query we understood that you are facing issue with Blue screen error on your ThinkPad X230.
 

Run Microsoft fix it tool and scan for file and folder problems automatically.
Download and install ThinkVantage system update utility from Lenovo support site, and run the application to update all the latest drivers and application for your system.
Run system scan from Lenovo solution center.
Please go to my computer ? C drive ? Windows ? System32 ? copy Minidump folder to desktop with compressed format, upload it to any 3 rd party cloud drive and provide us the link, so that we can verify the error file and assist you further.   

Hope this helps.
 
Best regards,
Hemanth Kumar





Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.Follow @LenovoForums on Twitter!

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Today, I've been racking my brain trying to figure out how to recover from a problem with winlogon.exe which caused a "Windows logon process terminated" error with codes 0xc00021a and 0xc000034.

I found this article and it helped but didn't solve the problem. I thought I was faced with having to run a repair of the Windows installation, if not re-install.

That is until I decided to scan winlogon.exe using one of the online scanning services, like Jotti or Virus Total, to see if winlogon.exe had been infected. That's when I discovered the file was MISSING from \windows\system32. A Google search on a missing winlogon.exe file turned up this thread which provided the solution I needed!!!!

Many thanks to "coderitr" for your post! Copying winlogon.exe from \windows\servicepackfiles to \windows\system32 solved the problem beautifully!

Thanks!!!!!

Peace...
 

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I've done a quick search to try and find a solution to this but it seems like everyone else has had this issue with logging in.Unfortunately for me this happens at what seems to be quite random.There is a minidump that I have if that helps of my latest crash.http://www.speedyshare.com/8eAWJ/03...I have Windows 8 Pro on a SSD. Seems to happen mostly when playing games but one time i came back to my PC and it was BSODed.Any solution other than "Reinstall Windows" would be great! ThanksMore about : 0xc000021a bsod error login related win8

Answer:0xc000021a BSOD Error (Not login related) Win8

I threw the dump into the debugger, and it tells me, "Windows must now restart because the Remote Procedure Call (RPC) service terminated unexpectedly." This is bad for you because it means your dump doesn't have enough information to explain RPC's crash. Given the age and popularity of Win8, I'd suspect some third party driver / service is mucking things up. It could be the copy protection (SafeDisc) some game installed.Try updating drivers (your sound driver was released a year before your OS) and / or uninstalling customized drivers (the Razer stuff).How To Ask Questions The Smart Way

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I booted my backup PC with Windows 10 Preview on it after seeing the availability of build 10041 announced. The update was there along with a lot of other invalid updates. I boot up WIN10 at at least every other day to see what's new. So I was surprised see so many of these other updates. Many of them were for Intel HD 4600 graphics and ASUS Bluetooth hardware that would be imbedded on the MB. But my Win10 PC is AMD based and has AMD Radeon 3300 on-board graphics and no on-board Bluetooth. The strange thing is that those updates that cause the error are appropriate for my other main PC which is ASUS Z97-PRO and Intel i-469K based with Intel on-board HD4600 graphics... and ASUS on-board Bluetooth. It's spooky but it is as if windows update is confusing its search with my other Windows 7 PC. In WIN10 9926 Windows Update you can't decline an update that the system finds for you.

The system suddenly does a restart and then it can't find the C: drive. I have to power off the power supply for 10 sec and restart to get back to being able to see the SATA1 drive. I had to work through three cycles of those invalid updates and on the last I got the final 21a error code... after that on the next Win10 boot the build 10041 started to install normally.

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I bought my yoga 2 13 in November 2014. It has worked well till last week. Now it freezes for 10-20 seconds on the simplest click to another window. I got an error xode 0xc00021a. I rebooted and it seems to be working but occasionally it freezes. I noticed my SSD space was low at 16GB so I deleted files and got it back to 32GB but the freezing still continues. Any help is appreciated. Thanks Rajesh

Answer:error code 0xc000021a and freezing for a few seconds on yoga 2 13

Hi rajeshprasad1 , 
 
 
Welcome to the Community Forums.
 
Error 0xc000021a  may be a system file error on base check but may also hide underlying issue  like bad sectors or drive. On other scenarios , this error can cause system not to boot to Windows .
 
Best that you take time to back up everything that is important or if that would be hard, try to get data recovery tech / center to slave the harddrive for the back up if possible and have then run a harddrive diagnostics at the same time. 
 
Would it work ok on safe mode?  
Would you be able to run individual Storage test using this link .
 
Update us how it goes .
 
 
Regards

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Hi. I helped my friend install windows 10 on his desktop pc. but after installation, it wont boot, rather showing bsod error 0xc000021a, we have tried reinstalling for a couple of times, but the error persisted. BTW, the previous os was windows 7. We deleted the previous OS's partition and installed it there, but it seems like nothing happened. please help.

Answer:BSOD Error code 0xc000021a after clean install Win 10 x32

Hi keityrobins,

I'm very sorry for the delay, there aren't many people in this section.
Are you still requiring help?
If so, please read BSOD Posting Instructions

Please fill in your system specsPlease go to this site and download the tool. The tool will give you detailed information about your system specs, please fill in your system specs more completely.How to fill in your system specs:

1 more replies
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Hi  I have a Lenovo U320 Touch runing Windows 8.1 and everytime I try to shut id down , it  1) Takes a very long time ( > 10 mts ) 2) Does not shut down cleanly and reaches a light blue screen which says " toy PC ran into a problem and needs to restart. We're just collecting some error info and then we'll restart for you. Error Code - 0xc000021aHangs there and does not re-start  If rather than "Shut Down" I try and restart  1) The system just hangs on "restarting" message for over 10 mts and I have to long press the power key to shut it down  Does anybody has this problem ? 

Answer:Lenovo Touch 430 | Shut Down Error Code | 0xc000021a

Dear Apache05
 
Welcome in lenovo community
 
Such error is considered to be windows worms that's worth than the normally viruses , in all way the best solution is to make Refresh My PC .
 
however there is an application called Cleaner you can install it and make PC full cleanup check . it may solve the issue .
 
Thanks
Alaa





Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.Follow @LenovoForums on Twitter!

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blue screen and error 0xc000021a and the continuous repair loop
please help
Attachment 50235

Attachment 50236

Answer:blue screen and error 0xc000021a and the continuous repair loop

Hi RayB63,

I have a few questions for you thanks to my own experience with this crash.

When started the crash to occur?
In my experience, people weren't able to boot into the system to run the tool with this crash.
Are you running in safe mode to run the dm log collector?

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Not really tech savy so any help is appreciated...
Receiving the error code upon start up and unable to access normal functions.

Answer:Windows 8 Issue: Error 0xc000021a: Dell Inspirion N4111

By "unable to access normal functions" do you mean you can't boot into Windows?

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Where do I even start?
A client of mine came to me with their HP desktop and were saying it could not boot and restore points were not even working. I thought I would have this worked out in no time. I was wrong.

Here is the details for everything:
- Error code is 0X000021a and I can only see it when I, attempt to, boot into Safe Mode (Which all Safe Mode options do not work.)
- Normal booting into the OS results in a mainly blue screen with thin lines and streaks cutting through the screen and nothing is distinguishable.
- I tried System Restore and there is nothing there to access, says Windows.
In this next section, I run commands from the Command Prompt in the Windows Troubleshooting section of the boot.
- SFC scans result in this now: "Windows Resource Protection could not perform the requested operation."
- Chkdsk: Regular Read-Only mode tells me "No further Action is required" and running the extended commands, such as /f /r, takes a huge amount of time and I only did that once. No dice.
- DISM commands seem like such a good idea but I can run only one of them and it does not help me in any way. Say I run "DISM /Online /Cleanup-Image /CheckHealth" it gives me "Deployment Image Servicing and Management Tool. Version 10.0.14393.0.
Error: 50. DISM does not support servicing Windows PE with the /Online option."
And if I try any other DISM commands, more errors, like Error 2.
- System Repair does not work.
I like to fix com... Read more

Answer:BSOD Error Code 0xc000021a after attempting to install updates

Download an ISO from this post (Win10PE with preinstalled software that could help troubleshooting) and in the file explorer search for dump files in C:\Windows\Minidump. Copy these files to a different storage device. Then upload the dumps via a working system after zipping the dumps (the site does not support the dump extension)

5 more replies
Relevance 52.48%

Hello all,

I was asked to disinfect a friend's computer that was absolutely infested with virii, malware, spyware, and the like. I began by installing and running AVGh antivirus. After running a full scan, I was asked how I wanted to proceed regarding a particular infected file (unfortunately I did not write down the filename) and I choose either delete/qyuantine. Immediately
following, I was greeted with a blue screen that read 0xC000021A error. Since then, I have tried every possible way to boot: Safe Mode, Last previous configuration, etc. I also tried booting from the Dell utility partitiion and all those tests Passed (even the OS/Boot up test- go figure). Because all of these boots were unsuccessful, I decided the only way to fix this would be a fresh format. Well I can't even do that! I choose boot from CD and still get the blue screen with the same error! How in the world can I fix this if I can't even format and reinstall the OS? Any ideas?

I have googled endlessly and failed to come up with a solution. I read Microsoft's documentation but there is no way for me to follow the steps since I cannot access any kind of prompt.

Thanks so much in advance.
 

Answer:Help!! Absolutely baffled by 0xC000021A error and Blue Screen. Can't even format!

12 more replies
Relevance 52.48%

Hi everyone,

My friend just began getting a fatal system error when he tries turning his computer on. It loads up all and displays the background, and then crashes. The error is a blue screen:

STOP: C0000021a {Fatal System Error}
The Windows Logon Process System process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000).
The system has been shut down.

I've been unable to find anything to correct this problem. It can boot up into safe mode but not safe mode with networking capabilities (it then does the same thing). Anyone know of any solutions? Thanks!
 

Answer:Blue Screen: STOP 0xC000021A {Fatal System Error}

16 more replies
Relevance 51.66%

Hey all, long-time lurker here. I wanted to start off by saying thank you, as I've found the info posted here (regarding other misc. problems I've had) to be very helpful

I'll start off with my specs:
Laptop: MSI GX640
CPU: Intel Core i5-430M
Memory: DDR3 2 GBx2
Video Card: ATI Radeon HD 5850 w/ 1 GB DDR5 VRAM

I don't know if any other information is necessary for this particular problem, but if there's any relevant info that I missed please do let me know.

Anyway, right now I have a problem with the above mentioned error. It first started while playing XCOM, and it pretty much happened every XCOM session thereafter, so I tried looking for some ways to DIY troubleshoot it. To that end, I've tried sfc, disk check, virus and malware scans, and also updating my drivers. All the scans didn't find anything unusual, and currently I'm pretty sure my drivers are up-to-date.

I want to add a couple of things here, just in the interest of providing as much info as possible, though I'm not sure if it will be pertinent. Anyway, for updating my drivers I used a third-party program called SlimDrivers, and I think it worked properly. I realize driver update software can be sketchy, but it had good reviews on cnet, which I suppose was as reputable a review source as I could find. But moving on, I goofed when updating my video card drivers, as I downloaded a version that, it turned out, was incompatible for my laptop. This became apparent when the top of my screen started flic... Read more

Answer:BSOD while playing games: fatal system error 0xc000021a + Event ID 86

Welcome

Thanks for the very nice first post, lets start with problematic software:


Code:
Start Menu\Programs\Check Point Public:Start Menu\Programs\Check Point Public
Start Menu\Programs\Check Point\ZoneAlarm Public:Start Menu\Programs\Check Point\ZoneAlarm Public
Start Menu\Programs\DAEMON Tools Lite Public:Start Menu\Programs\DAEMON Tools Lite Public
ZA is known to cause BSODs, suggest you to uninstall it while troubleshooting. (Google for Zone Alarm removal tool and uninstall everything related to it.) Google

Daemon tools is known to cause BSODs, search our forum for evidence. (uninstall it!)

The usual causes on your bug check:

Code:
STOP 0xC000021A: WINLOGON_FATAL_ERROR
Usual causes: User-mode device driver, system service, or third-party application, Mismatched system files
WINLOGON_FATAL_ERROR (c000021a)
BugCheck C000021A, {fffff8a006eab590, 0, ffffffffc0000001, 1006f0}
----- ETW minidump data unavailable-----
Probably caused by : ntkrnlmp.exe ( nt!ExpSystemErrorHandler2+5e1 )
I'd also like to know what antivirus are you using?

Recommended antivirus program for Windows 7 based on stability compared to others:-
Microsoft Security Essentials - Free Antivirus for Windows
Malwarebytes - The Free version
Good and Free system security combination.
Run a full scan with both (separately) once downloaded, installed and updated.


Code:
Driver c:\windows\system32\drivers\atikmpag.sys (8.14.1.6091, 156.50 KB (160,256 bytes), 3/17/2010... Read more

9 more replies
Relevance 51.66%

had one last week that was a little different and it just magically disappeared (I'm building a new computer as soon as this semester ends if this computer will last that long).

I have MOST everything backed up on an external hard drive, but when i had tried to copy the my documents folder, it kept giving me an error, and I don't remember if I copied any of it over or not. The programs are all backed up, but AFAIK any documents I had are still on there, and I'd REALLY REALLY like to make a clean sweep through the computer and get as much copied over as possible.

It's windows xp home with SP3. It started after running an AVG scan overnight and the computer went on standby during the scan. My mom tried to wake the computer up and it froze and when i rebooted it (hit the power button once and it gave me the option to shut down, restart or go to standby like it would if i had gone to the start menu and done it) it gave me a BSOD (process1_initialization_failed), and i tried again and it gave me a different BSOD (the one im posting about).

I have a recovery console.ISO on a CD that I found off of these forums and it works, but I DO NOT have the windows XP CD. It's a Dell dimension 4600 (from late 2003 hehe).

I'd rather not have to wipe the HD or buy a new one because I don't want to spend money on this computer...If I can fix it with recovery console or by getting a windows cd from someone (if i can find one) that would be ideal.

please tell... Read more

Answer:Solved: BSOD 0xc000021a {fatal system error} windows xp home

9 more replies
Relevance 47.56%

My win 10 computer has just started giving me the above error code.
I can log in using mouse & keyboard, but when I get to the start screen I get the above error code 0XC000021a.

I have tried several times to do a fix, like shutting off the power supply, rebooting, waiting etc.

Any solutions out there?

I am sending this Email on my Win 8.1 desk top.

Tully

Answer:Error code 0XC000021a "Keyboard & Mouse stopped working"

Can you boot in Safe Mode?

5 more replies
Relevance 47.56%

Tried booting 3 times with same result. Dual booting 10TP with 8.1 Pro. 10TP boots, I log in fine, and about 20 seconds in it states that MS Mouse & Keyboard Center has failed. It writes a report to send. Then about 10/15 seconds later I get a blue reboot/collecting data screen with a "STOP 0xC000021A" error. So I look that up: ttp://support.microsoft.com/kb/156669

That states some causes.

?Mismatched system files have been installed.
?A Service Pack installation has failed.
?A backup program that is used to restore a hard disk did not correctly restore files that may have been in use.
?An incompatible third-party program has been installed.

I do have an MS Arc mouse. This all runs fine in 8.1. I?m thinking OK, MS Mouse & Keyboard Center had installed via Windows Update automatically and perhaps it didn't load correctly or it?s incompatible. I look to see that it?s not working in JDobbsy1987 thread of working/not working apps. Sure enough it's there, although that thread hasn?t been updated lately. Windows 10 Preview Tested Apps Trouble is that I don?t know when it installed. Usually I get a settings screen after it installs, but I just don?t remember that.

Anywho, I know I won?t have time to go in and uninstall or any other task. Also keeping in mind the other potential causes and suggestions/remedies. So I go back to 8.1 and make a 10TP Safe Mode. Boot into it with a warning off the bat that states "explorer.exe warning. Unknown hard error&q... Read more

Answer:Mouse & Keyboard Center/"STOP 0xC000021A" error

You can uncheck that it is not greyed out you can also uncheck get recommended updates also.

2 more replies
Relevance 47.56%

I recently updated my PC to windows 10. It worked fine for a couple of weeks, but then it stopped booting. I started it regularly, and it showed the HP logo with the spinning circle, but then it just loaded into a flashing grey and black screen. Booting it in safe mode only got me a blue screen error, with the 0xc000021a error. I've looked pretty much everywhere, and I can't find a fix that works. Sfc scans stop at 100% verification and say "Windows resource protection could not perform the requested operation." I tried "CHKDSK C: /R, but it found no errors. Any other fixes seemed to require launching windows for downloads / file access, and I can't appear to do that. Any help would be much appreciated, so thank you to anyone who replies!

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hello everybody, suddenly today when i tried to boot my pc pc i faced the "0xC000021A" error. I have tried a lot of things such as safe mode, windows auto repair and "bootrec /fixmbr" & "bootrec /fixboot" commands but nothing worked...I am desperate... Thanks in advance for your help

Answer:Windows 8.1 pro "0xC000021A" error at boot

This page seems to have the most useful info:
Windows 8 Pro cannot boot - Error 0xC000021a - Microsoft Community

The post with heading: AmirOveisi replied on January 12, 2013

seems to have a fix that didn't require a Windows install. I'm not sure what he's referring to Must be in the boot option screen.

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Relevance 43.87%

On WinXP when I shut my computer down, at the end of shutdown process I get a blue screen message saying:

STOP: c000021a Fatal system error. The Windows Logon Process system process terminated unexpectidly with a state of 0x00000000 (0x00000000 0x00000000)
The system has been shut down.

It is doing no harm to my computer but I have to turn off the power to shut it down. Does anyone know how to fix it?
Thanks
 

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Question: 0xc000021a

I tried to run a clean boot but when I restarted my PC it got stuck on the windows preparing screen so I did a hard reset computer started up fine so then I did a system restore now my computer won't start normal or in safe mode error 0xc000021a
I went into advance menu click on undo restore I think it's stuck
Please help I'm assuming I'm screwed but fingers cross

Answer:0xc000021a

Can you do a system restore again? (rather than undoing it)
Pick a date even further back and try that.

0 more replies
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Question: BSOD 0xc000021a

Hello, I am in need of help because my computer keeps giving me blue screens daily.

The blue screens consist of an error name 0xc000021a.

My OS is Windows 7 Professional x64
Installed 2 days ago.
Upgraded from Windows Vista Home Premium x64.

Answer:BSOD 0xc000021a

WINLOGON_FATAL_ERROR (c000021a)
The Winlogon process terminated unexpectedly

1. Create a new administrator account and see if it helps. If not:

2. Run sytem repair from 7 install DVD -> command prompt -> sfc /scannow

3. Update old drivers:

nvm62x64.sys Fri Oct 17 17:01:06 2008
nForce motherboard (networking driver)

VSTCNXT6.SYS Wed Oct 15 20:52:22 2008
Conexant Modem - update or disable



Crash Dumps:


Code:
Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [F:\a\Minidump\D M P\122210-28782-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*c:\websymbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Machine Name:
Kernel base = 0xfffff800`0280f000 PsLoadedModuleList = 0xfffff800`02a4ce50
Debug session time: Wed Dec 22 22:24:37.538 2010 (UTC - 5:00)
System Uptime: 0 days 0:00:27.112
Loading Kernel Symbols
...............................................................
.........................................................
Loading User Symbols
Loading unloaded module list
....
*******************************************************************************
* ... Read more

3 more replies
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Initially(in Oct2016), I used regback registry to fix USBPCap USB not working problem . After sometime It gave 0xc000021a BSOD . So i used Windows 10 iso to repair and maybe* messed it up with bootrec and bcdedit commands. Tried SFC and dism but no integrity voilations. I am able to boot PC ONLY by disabling driver signature enforcement(which stays till restart due to fastboot). I remember I had deleted some OEM*.inf before bootrec. Incidents may not be related. Minidump on debugging show ntkrnlmp.exe to be the problem. Please help. Even safe mode doesn't work. I don't want to reset since my PC is highly customized desktop environment. Giving all details to be clear. Tried many methods in this forum. Please help. Older dumps:Old1, Old2.
MemTest+ Result Image.
Can't add picture directly[Adding does nothing].
Also
Code:
bootrec /scanos

gives Total identified Windows installations: 0

Answer:How to fix 0xc000021a, BSOD?

Diagnostic Test

 RAM TEST

Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 10 Forums


   Note


MemTest86+ needs to be run for at least 8 complete passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors here. Even a single error will indicate RAM failure.

Make a photo of the result and post it.

Addition:
If errors show up you can stop the test, remove all sticks but 1 and test this single stick in each slot for 8 passes or until errors show, switch sticks and repeat.
If errors show up and you see them a lot later, no problem, the errors don't affect the test.

41 more replies
Relevance 41.41%

I was browsing Tumblr on Microsoft edge and suddenly I get a BSOD which said driver_overran_stack_buffer.
Now I get the endless reboot, 0xc000021a.
I do not have a restore point or disc from which to recover from. I upgraded downloading the tool on the Microsoft website... Please help me because this computer has all my important work files.

Answer:driver_overran_stack_buffer then 0xc000021a

Hi ethansimonton,

I'm very sorry for the delay, there aren't many people in this section.
Are you still requiring help?
If so, try from somewhere to create a recovery USB.

1 more replies
Relevance 41.41%
Question: 0xc000021a BSODs

I have been experiencing for months. Did full system reinstall about 2 months ago, did no good. Get blue screens while working, while sleeping, on shutdown, on restarts. I've updated drivers, BIOS. Ran Lenovo latest evaluation tools.
Read posting instructions.
Attached Sysnative, Perfom zips
 
Created system restore point.
About to start running Driver Verifier
 
Hope we can finally figure out what is triggering these BSODs, making it a pain to use this computer.
Thanks for you help.
cman220
 
 
Spoiler Responses
Laptop
Lenovo ThinkPad x120e  
Product ID:  05962RU
AMD E-350 Processor (2)
AMD Radeon HD 6310 Graphics
 
Windows 7 Professional, SP1, 64-bit
Original OS was Windows 7 Professional, 64-bit
OEM installed OS system
Hardware new 09/2011
Full system reinstall (deleted all files) around July 1, 2015. Installed from Q drive Lenovo Recovery files (OEM pre-installed on HDD).

Answer:0xc000021a BSODs

Update. Initiated the Driver Verifier following detailed instructions on settings. Upon restart, PC had BSOD 0x000007e. tried restarting, went into loop of loading files, just starting boot, showing "Microsoft Windows" and going into another 0x0000007e BSOD. Also tried battery pull. Finally did F8 safe mode. Was able to successfully perform restore. I will wait for your input before I proceed further.
Thanks, cman220

0 more replies
Relevance 41.41%
Question: 0xc000021a crashes

Hey everyone,

I recently got a new video card but when i installed it in my computer, it wont let me boot and even after i took it out, im still receiving the same errors.

Please help!!

My computer is the HP Pavilion 07-1154, i know that the pre-installed video card is AMD Raedon but my new video card is Nvidia, could that be the problem? And how could i fix it?

Answer:0xc000021a crashes

What is your Windows OS? Your profile says you are running Windows 8 but you are posting in the Windows 98 forum?
https://support.microsoft.com/en-us/kb/156669

3 more replies
Relevance 41%

I was doing a system reset on my HP Pavilion g6-1d01dx Notebook PC and now when I turn it on all I get is a blue error screen with a stop code 0xc000021a. Can't get into system restore by the f11 key, don't have any disc's or usb recovery either. What do I need to do to be able to use my laptop again. When I did the system reset I was using Windows 10. Should of reset to Windows 7 Home.
 

Answer:Stop code 0xc000021a

There's no need to post this issue in 3 different threads.
You've been replied to here:
https://forums.techguy.org/threads/stop-code-0xc000021a.1195252/#post-9405491

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

3 more replies
Relevance 41%

Please Delete

Answer:Windows 10 BSOD 0xc000021a

Why Move the thread? am not looking for help at fixing the BSOD. Am looking for advice on new install of Windows 10
The BSOD I have done everything I know to fix it without luck.

1 more replies
Relevance 41%

Hi Everyone.
Hopefully I can resolve this... I've tried everything to sort this out but nothing so far has yielded any positive results.

I cannot boot my Win 10 Pro at all. All efforts result in the error C00021a. We can go into what I've done if you like (no problem with that) but for the moment, can anyone tell me how to do an inplace upgrade (Win 10 to Win 10)? I think this will probably sort it out since DISM is unable to do anything constructive. Problem is that I cannot do an "upgrade" as to do that you must be running Windows (normal boot) from the start otherwise Windows Setup throws up an error telling me to start the machine normally and run the upgrade from the external media. Is there any way to do this upgrade to bypass this error? I can't boot normally so it's impossible to fulfill this criteria.

I have a pile of specialised music programs on this machine. I really don't want to have to install everything again as I have them set up "just so". Hope someone can help.

I read the initial admin post about installing a program to help you guys with dump files - but I can't install that either as the machine won't boot into Windows. Of course, I've run the usual sfc scans and dism routines. Sfc won't run and repair - will only check. HDD scans come up ok. Dism routines will check (all comes up ok) but not restore health. Therefore I'm really at the refresh stage. I have boot media to do this but can't get any further...

Can anyone help me ... Read more

Answer:BSOD 0xc000021a - Cannot boot Win 10 at all

Maybe this will help? https://www.reddit.com/r/techsupport...oot0xc000021a/ (4th post down).

Basically you boot the Windows 10 install disc then go to a Command Prompt.
Copy the existing C:\Windows\system32\config file to a a Backup folder.
Copy C:\Windows\system32\config\RegBack to C:\Windows\system32\config, replacing what's there.
Exit the install and do a normal boot and see if you are back to booting again.

If yes, would be a good idea to do a System Restore to a date before the problem started happening if you have System Restore enabled.

39 more replies
Relevance 41%

Hello all!

I have a friends PC (C2D 8400, Intel x38MB, nvidia 660gtx, 8GB ddr3, 2xhdd in raid 0) with Win10
Everything worked fine half year until few days ago, updates installed fine and after few restarts BSOD 0xc000021a
happened.

I tried every single option in Win RE
Startuprepair - fail
Every setting in startupsettings - fail
Safe mode - fail
Reset PC - fail
Booted USB Win10 iso, tried reset, starturepair - fail

SFC offbootdir offwindir found integrity violations but can't repair them because WRP can't start repair etc etc....
DISM "sourcedrive:windows" /cleanup-image /restorehealth "source:wimfileinmyusb" - fails because RPC no running, but it is running

I can upload logs if needed.

Answer:BSOD 0xc000021a Windows 10

Please upload the dump(s) if possible, you'll need to zip it to upload.
Please read How to upload files

6 more replies
Relevance 41%

I was doing a system reset on my HP Pavilion g6-1d01dx Notebook PC and now when I turn it on all I get is a blue error screen with a stop code 0xc000021a. Can't get into system restore by the f11 key, don't have any disc's or usb recovery either. What do I need to do to be able to use my laptop again?
 

Answer:Stop code 0xc000021a

16 more replies
Relevance 41%

There is a forum post in the ...Removal Logs forum about this issue, where an XP PC dies with STOP: 0xc000021a {Fatal System Error}The windows Logon Process system process terminated unexpectedly with a status of 0xc0000005 (0x00000000 0x00000000)The system has been shut downand a later scan finds that /Windows/system32/winlogon.exe is infected with TR/Spy.507904.8.The advice given was to boot from an XP CD, run Recovery Console, and replace winlogon.exe (and atapi.sys) with the versions from the CD. This solved the BSOD issue, but resulted inan error "winlogon.exe encountered a problem and needs to close message"Such an error seems a likely possibility, since the CD version may well not match the current installed version that's being replaced. I had the same STOP 0xC000021A issue very recently, which I eventually resolved by replacing winlogon.exe with the copy from /Windows/system32/dllcache, after runningFC /B winlogon.exe dllcache\winlogon.exe to compare the two copies. (I had booted from a UBCD4Win CD rather than Recovery Console so I had the FC command available.)Perhaps this will help someone else with this problem (it would have saved me much time!)

More replies
Relevance 41%

Hello all!

I have a friends PC (C2D 8400, Intel x38MB, nvidia 660gtx, 8GB ddr3, 2xhdd in raid 0) with Win10
Everything worked fine half year until few days ago, updates installed fine and after few restarts BSOD 0xc000021a
happened.

I tried every single option in Win RE
Startuprepair - fail
Every setting in startupsettings - fail
Safe mode - fail
Reset PC - fail
Booted USB Win10 iso, tried reset, starturepair - fail

SFC offbootdir offwindir found integrity violations but can't repair them because WRP can't start repair etc etc....
DISM "sourcedrive:windows" /cleanup-image /restorehealth "source:wimfileinmyusb" - fails because RPC no running, but it is running

I can upload logs if needed.

More replies
Relevance 41%

Hello all!

I have a friends PC (C2D 8400, Intel x38MB, nvidia 660gtx, 8GB ddr3, 2xhdd in raid 0) with Win10
Everything worked fine half year until few days ago, updates installed fine and after few restarts BSOD 0xc000021a
happened.

I tried every single option in Win RE
Startuprepair - fail
Every setting in startupsettings - fail
Safe mode - fail
Reset PC - fail
Booted USB Win10 iso, tried reset, starturepair - fail

SFC offbootdir offwindir found integrity violations but can't repair them because WRP can't start repair etc etc....
DISM "sourcedrive:windows" /cleanup-image /restorehealth "source:wimfileinmyusb" - fails because RPC no running, but it is running

I can upload logs if needed.

Answer:BSOD 0xc000021a Windows 10

Please upload the dump(s) if possible, you'll need to zip it to upload.
Please read How to upload files

more replies
Relevance 41%

Hi, so I had a feeling that my laptop (HP gaming ak030nd) had some viruses, so I installed AVG antivirus.It told me I had to delete some stuff, so I did, and suddenly some programs connecting to the network had some problems.So I decided to reset my laptop back to factory settings, and that took around 5 hours.However, now my laptop shows me 0xc000021a error everytime I start my laptop.It's a infinite loop of "HP logo" - "0xc000021a", and I've already tried installing a microsoft windows 10 repair program on my USB and plugging it in my ak030nd, but the same thing still happens: "HP logo" - "0xc000021a".I've read that I should go into the bios to let it recognise my USB, but I can't enter the BIOS either.I've already tried escape (spam and holding in), F1-F12, INS, delete, pretty much every button on the top of my keyboard.What can I still do in order to fix my laptop?Thank you

More replies
Relevance 41%

My HP Envy laptop, running Windows 10, is stuck in the following infinite loop when I try to power up:

1. BSOD, error code 0xc000021a
2. Automatic reboot, "Preparing Automatic Repair" shows at the bottom of the screen
3. BSOD, SYSTEM_THREAD_EXCEPTION_NOT_HANDLED(iaStorA.sys)
4. Automatic reboot, everything looks normal until #1 happens again a few seconds later.

I cannot even get the system to the repair screen on startup. Repeatedly tapping escape brings up the menu, but when I type F11, system diagnostics, I get BSOD with error message DRIVER_IRQL_NOT_LESS_OR_EQUAL (I am not sure, exactly what; it only stays up for a few moments before spontaneously rebooting).

I need urgent assistance to get to the boot disk on drive D...somehow...any how. I cannot even get to the system repair!!

EDIT: I did a hard drive extensive test last night and set it to loop until error. It just completed two iterations, and though it has not found an error, the hard drive short and long DST checks have statuses of "warning." What does this mean?

Answer:Two BSODs: 0xc000021a; SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

Hi tollbooth,

If I am correct, DST means Drive Self Test.
With the status 'warning' my guess is that the hard drive is starting to fail.

1 more replies
Relevance 41%

Hi Everyone.
Hopefully I can resolve this... I've tried everything to sort this out but nothing so far has yielded any positive results.

I cannot boot my Win 10 Pro at all. All efforts result in the error C00021a. We can go into what I've done if you like (no problem with that) but for the moment, can anyone tell me how to do an inplace upgrade (Win 10 to Win 10)? I think this will probably sort it out since DISM is unable to do anything constructive. Problem is that I cannot do an "upgrade" as to do that you must be running Windows (normal boot) from the start otherwise Windows Setup throws up an error telling me to start the machine normally and run the upgrade from the external media. Is there any way to do this upgrade to bypass this error? I can't boot normally so it's impossible to fulfill this criteria.

I have a pile of specialised music programs on this machine. I really don't want to have to install everything again as I have them set up "just so". Hope someone can help.

I read the initial admin post about installing a program to help you guys with dump files - but I can't install that either as the machine won't boot into Windows. Of course, I've run the usual sfc scans and dism routines. Sfc won't run and repair - will only check. HDD scans come up ok. Dism routines will check (all comes up ok) but not restore health. Therefore I'm really at the refresh stage. I have boot media to do this but can't get any further...

Can anyone help me ... Read more

More replies
Relevance 41%

I have a new sony vaio e1000 with windows 8 already installed with no windows recovery disk. It will not get past the logo, because it won't go past that I can't get to the bios boot in safe mode or to change the boot sequence. Any suggestions.
 

Answer:0xc000021a sony vaio

take the battery out
remove the power adapter
now hold the power button on for 60 seconds
 

1 more replies
Relevance 41%

Hi,
My laptop on startup will BSOD (started last week), windows will repair and eventually, I can use F8 then F7 to boot.
Really appreciate the help in isolating what apps/drivers are causing this.

Thanks in advance!

More replies
Relevance 41%

I upgraded from W7 x64 pro to W10 x64 pro. Everything transferred the machine was up and running. I usually leave it running and let the power settings put it to sleep and turn it off. I noticed it was on and went to go look and see BSOD. Tried restart, debug, reset and save files, recover to last known recovery point and safe mode. Nothing works. I plugged the drive into my laptop to run checkdisk, defrag and make sure the disk works. Its an OCZ Vector Sata III 256GB. I discovered it needs firmware 3.0 but this still doesn't explain why it was workign just fine and when left untouched went to BSOD.

I downloaded the utility you provide but I gather it is taking the specs from my laptop and not the external OCZ drive that is plugged in. How can I go about getting the needed data over? And any suggestions for a fix.

Thank you,
LEIP

Answer:BSOD W10x64 Pro - 0xc000021a

Please run the Log Collector, upload the resulting .zip file and we'll let you know if the relevant information is in there.

9 more replies
Relevance 41%

Hi, i built my PC back in august and have had no issues, until now.
I got a windows update notification

-updates
"Cumulative Update for Windows 10 for x64-based Systems"
"Update for Windows 10 for x64-based Systems (KB3106932)"

as always i reset my PC when there's a windows update and when i do it cannot access the boot drive, so i proceed to go into the command prompt and input the "DISM /image:c:\ / cleanup-image /revertpendingactions" which puts me into the Deployment Image Servicing and Management tool

i move the pending.xml and pending.old
(via the "move C:\Windows\WinSxS\pending.xml C:\Windows\WinSxS\pending.old" command) the folders and it works until i restart my PC and it brings me back to the inaccessible boot drive window and i have to move the folders again.... is there a permanent fix for this? it's really annoying and i'm totally lost

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Relevance 41%

I just upgraded my PC from Windows 7 to 8.1 and now I am getting BSOD with code 0xc000021a whenever I restart my PC.
Please help! Many thanks

Answer:BSOD on restartWindows 8.1 Pro 0xc000021a

Hi MobiusPizza & Welcome to the forums ^_^,

I have analyzed your dump files and below has been provided an analysis of the same for informative purposes :-

Code:
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
WINLOGON_FATAL_ERROR (c000021a)
The Winlogon process terminated unexpectedly.
Arguments:
Arg1: ffffc0009223f570, String that identifies the problem.
Arg2: ffffffffc0000005, Error Code.
Arg3: 00007ffce39a000a
Arg4: 000000831b53e0c0
1: kd> kbRetAddr : Args to Child : Call Site
fffff803`08594779 : 00000000`0000004c 00000000`c000021a ffffd001`cfc5f3f8 ffffe001`33bf0840 : nt!KeBugCheckEx
fffff803`0858c909 : ffffe001`33597300 ffffd001`cbaf77a0 00000000`00000000 00000000`00000002 : nt!PopGracefulShutdown+0x2c9
fffff803`083767b3 : ffffe001`35b224e0 00000000`00000000 00000000`00000000 ffffe001`33597040 : nt! ?? ::OKHAJAOM::`string'+0xb69
fffff803`0836ec00 : fffff803`087a67d1 00000000`00000001 ffffd001`cbaf7a58 00000000`c0000004 : nt!KiSystemServiceCopyEnd+0x13
fffff803`087a67d1 : 00000000`00000001 ffffd001`cbaf7a58 00000000`c0000004 ffffd001`cbdb2180... Read more

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Once in a while I get a 0xc000021a BSOD, which seem to be happening right after boot.

Here are the latest two.

----------------
Windows 8.1 enterprise, with all updates except September update KB2984006.
P.S. The SF Diagnostic Tool doesn't work for me. It gives no results.

Answer:Rather rare and random 0xc000021a BSODs

Please make the following reports and upload them with your next post:





MSINFO32:
Please go to Start and type in "msinfo32.exe" (without the quotes) and press Enter
Save the report as an .nfo file, then zip up the .nfo file and upload/attach the .zip file with your next post.
Also, save a copy as a .txt file and include it also (it's much more difficult to read, but we have greater success in getting the info from it).

If you're having difficulties with the format, please open an elevated (Run as administrator) Command Prompt and type (or copy/paste) "msinfo32 /nfo %USERPROFILE%\Desktop\TEST.NFO" (without the quotes) and press Enter. Then navigate to Desktop to retrieve the TEST.NFO file. If you have difficulties with making this work, please post back. Then zip up the .nfo file and upload/attach the .zip file with your next post.








systeminfo:
Please open an elevated (Run as administrator) Command Prompt and type (or copy/paste) "systeminfo.exe >%USERPROFILE%\Desktop\systeminfo.txt" (without the quotes) and press Enter. Then navigate to Desktop to retrieve the syteminfo.txt file. If you have difficulties with making this work, please post back. Then zip up the .txt file and upload/attach the .zip file with your next post.



Your BIOS dates from 2008. Please check at the manufacturer's website to see if there are any BIOS updates available for your system. Also check t... Read more

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Relevance 40.18%

Greetings all,

I love your forums and been searching them for the last several hours. I've seen some great advice, however I haven't done anything due to the fact that all the situations seem different.

Here goes.

I booted up my comp this am and was greeted by the beloved BSOD... Windows Stop: 0xc000021a(0xc0000034) Error.

I cannot log on in Normal, SafeMode, Last Known good Configuration

I have an SP2 XP Pro Disc. I have access to the recovery console. I have done chkdsk. Alot of the posts have mentioned things like FIXBOOT or verifying I have certain files and etc. Anyone able to give me a hand getting this thing back up and running. One other piece of possibly relevant information. I ran a malware bytes scan on the comp. It found 1 error. I didn't pay attention to it, fixed it. Restarted and everything was good. 24 hours later, the BSOD came up.
Thanks

Answer:Windows Pro BSOD 0xC000021a(0xc0000034) Help

Hi .Microsoft Says...Louis

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