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NT kernel error 1256, kmode exception not handled

System is VERY slow to start up, keep getting above error message on start up

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Http://byrev.net/2008-01/nt-kernel-error-1256-bugvirus/

this is a thread that might help you out.

goodluck!

Posted on Feb 10, 2008

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Posted on Jan 02, 2017

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Error message 0xc000021a


Winlogon.exe
Winlogon.exe is a part of Windows Login System. As suggested by its name, this process is responsible for handling login and logout procedures on your computer. Primarily though, it is concerned with the following functions:
  • Managing secure attention sequence
  • Loading user profile
  • Locking the system while Screen Saver is activated
  • Providing easy access to Windows station and desktop
Csrss.exe
Csrss.exe is a user-mode program belonging to the Microsoft Client/Server Runtime Server Subsystem. It is a critical piece of software responsible for managing threads and creating console windows. Furthermore, it is also thrown the crucial duty of controlling operations of the Win32 subsystem not belonging to the kernel mode.
A STOP 0xC000021A message is generated when either of these processes fails to execute. Upon detecting this bizarre dilemma, Windows NT kernel halts the system and raises the BSOD error. Following is a list of common causes leading to the failure:
  • Mismatched system files have been installed
  • A Service Pack installation has failed
  • Incompatible third-party software has been added
  • Unsupported drivers are housed in the system

Jul 20, 2014 | Gateway NE56R10u Laptop Intel Celeron...

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Fix kernel dell xp


There are several different ways that kernel.dll errors can show up on your computer. Here are some of the more common ways that you might see kernel.dll errors:
  • "Kernel.dll Not Found"
  • "This application failed to start because kernel.dll was not found. Re-installing the application may fix this problem."
  • "Cannot find [PATH]\kernel.dll"
  • "The file kernel.dll is missing."
  • "Cannot start [APPLICATION]. A required component is missing: kernel.dll. Please install [APPLICATION] again."
Kernel.dll error messages might appear while using or installing certain programs, when Windows starts or shuts down, or maybe even during a Windows installation.
The context of the kernel.dll error is an important piece of information that will be helpful while solving the problem.

Cause of Kernell.dll Errors
Kernel.dll errors are caused by situations that lead to the removal or corruption of the kernel DLL file.
In some cases, kernel.dll errors could indicate a registry problem, a virus or malware issue or even a hardware failure.

How to Fix Kernel.dll Errors
Important: Do not download kernel.dll from a "DLL download" website. There are many reasons why downloading a DLL file is a bad idea. If you need a copy of kernel.dll, it's best to obtain it from its original, legitimate source.
Note: Start Windows in Safe Mode to complete any of the following steps if you're unable to access Windows normally due to the kernel.dll error.
  1. Restore kernel.dll from the Recycle Bin. The easiest possible cause of a "missing" kernel.dll file is that you've mistakenly deleted it.
    If you suspect that you've accidentally deleted kernel.dll but you've already emptied the Recycle Bin, you may be able to recover kernel.dll with a free file recovery program.
    Important: Recovering a deleted copy of kernel.dll with a file recovery program is a smart idea only if you're confident you've deleted the file yourself and that it was working properly before you did that.
  2. Run a virus/malware scan of your entire system. Some kernel.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It's even possible that the kernel.dll error you're seeing is related to a hostile program that's masquerading as the file.
  3. Use System Restore to undo recent system changes. If you suspect that the kernel.dll error was caused by a change made to an important file or configuration, a System Restore could solve the problem.
  4. Reinstall the program that uses the kernel.dll file. If the kernel.dll DLL error occurs when you use a particular program, reinstalling the program should replace the file.
    Important: Try your best to complete this step. Reinstalling the program that provides the kernel.dll file, if possible, is a likely solution to this DLL error.
  5. Update the drivers for hardware devices that might be related to kernel.dll. If, for example, you're receiving a "The file kernel.dll is missing" error when you play a 3D video game, try updating the drivers for your video card.
    Note: The kernel.dll file may or may not be related to video cards - this was just an example. The key here is to pay very close attention to the context of the error and troubleshoot accordingly.
  6. Roll back a driver to a previously installed version if kernel.dll errors began after updating a particular hardware device's driver.
  7. Run the sfc /scannow System File Checker command to replace a missing or corrupt copy of the kernel.dll file. If this DLL file is provided my Microsoft, the System File Checker tool should restore it.
  8. Install any available Windows updates. Many service packs and other patches replace or update some of the hundreds of Microsoft distributed DLL files on your computer. The kernel.dll file could be included in one of those updates.
  9. Test your memory and then test your hard drive. I've left the majority of hardware troubleshooting to the last step, but your computer's memory and hard drive are easy to test and are the most likely components that might cause kernel.dll errors as they fail.
    If the hardware fails any of your tests, replace the memory or replace the hard drive as soon as possible.
  10. Repair your installation of Windows. If the individual kernel.dll file troubleshooting advice above is unsuccessful, performing a startup repair or repair installation should restore all Windows DLL files to their working versions.
  11. Use a free registry cleaner to repair kernel.dll related issues in the registry. A free registry cleaner program may be able to help by removing invalid kernel.dll registry entries that might be causing the DLL error.
    Important: I rarely recommend the use of registry cleaners. I've included the option here as a "last resort" attempt before the destructive step coming up next.
  12. Perform a clean installation of Windows. A clean install of Windows will erase everything from the hard drive and install a fresh copy of Windows. If none of the steps above correct the kernel.dll error, this should be your next course of action.
    Important: All the information on your hard drive will be erased during a clean install. Make sure you've made the best attempt possible to fix the kernel.dll error using a troubleshooting step prior to this one.
  13. Troubleshoot for a hardware problem if any kernel.dll errors persist. After a clean install of Windows, your DLL problem can only be hardware related.
Applies To
The kernel.dll error message could apply to any program or system that might utilize the file on any of Microsoft's operating systems including Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.

Sep 12, 2013 | Microsoft Windows XP Professional for PC

1 Answer

The error message says fatal system error.


Hi. The STOP 0xC000021A error occurs when either Winlogon.exe or Csrss.exe fails. When the Windows NT kernel detects that either of these processes has stopped, it stops the system and raises the STOP 0xC000021A error. This error may have several causes. Among them are the following:
  • 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.
Booting the computer to its Last known good configuration will resolved the issue. Please see procedure below:

Turn of the computer
Keep on tapping F8 key the moment you press the power button
You should be getting a advanced boot screen
Select Last known good configuration from the selections then hit enter
Computer should be booting up by now to windows

All the best!

Jul 24, 2010 | Acer TravelMate 2480-2968 Notebook

1 Answer

STOP C0000221 erro de hardware desconhecido systemroot system32 ntdll.dll


You may receive one of the following stop error messages while working on your Windows XP computer.
STOP: C0000221 unknown hard error
Path\File_nameSTOP: 0xC0000221 unknown hard error
C:\Winnt\System32\Ntdll.dll (or another specific file or driver)
STOP: 0xC0000221 STATUS_IMAGE_CHECKSUM_MISMATCH
Path\File_name
Note: The error message may be discussed in many different formats-blue screen or message box. It depends on when the corrupt file was detected.
Similarly, you may receive the following STOP messages when a critical system file fails to load on your Windows NT and Windows 2000 computer.
STOP: C0000221 unknown hard error
<path>\<file_name>STOP: 0xC0000221 unknown hard error
c:\winnt\system32\ntdll.dll
Note: Some other drive may also be given in the message.
On Windows 2000 the following error message may display:
STOP: 0xC0000221 STATUS_IMAGE_CHECKSUM_MISMATCH
<path>\<file_name>
You usually face this problem when an incorrect driver for one or more hardware is installed on your system. For instance, the error messages described above are displayed when you install a millions of instructions per second (MIPS) driver on a x86 system.
Cause of the Error
This error occurs if the file given in the error message is damaged.
Your Windows XP operating system checks the following files for integrity during system startup:
  • All driver files, excluding the files that loaded using the system loader to start your system .
  • All DLL (Dynamic Link Libraries) on the system. These include, Graphics Driver Interface (GDI), User, Ntdll, Crtdll, Shell, Kernel and several other DLL files on the system.
  • On Windows NT and 2000 computers, all DLLs loaded in the Window server address space are also checked.
The problem may also occur if an Iomega Zip drive is connected to the same cable as your hard disk drive.
Resolution Method
You can resolve this issue by removing the corrupt driver from your computer and then reinstalling a fresh and healthy copy of the driver. You may need to use the Device Manager utility to remove the driver. It is recommended that you clean your registry with the help of a reliable tool, such as RegGenie to ensure that all entries related to the uninstalled driver are removed from the system. After you have completely removed the corrupt driver, restart your system and install a fresh copy of the driver on the system.
If this step does not resolve the problem, you may have to reinstall Windows XP.
It is recommended that you regularly clean your registry with the help of a registry cleaner tool and perform antivirus and antispyware scan using tools, such as Antivirus Plus and StopZilla to prevent such errors from occurring on your system.

GOOD LUCK :-)

Feb 03, 2010 | Intel Computers & Internet

1 Answer

Memory file dump error, pc freezes


Hi,

This is the issue with your RAM chip or Operating System .Pls replace the RAM chip with goods one and on the system .If still problem not resolved pls re-install the Operating System again.

Nov 17, 2009 | E-Machines eMachines Desktop PC

2 Answers

Error communicating with kernel


try to instal the antivirus again there is some files corrupted
ok ;)

May 28, 2009 | Encore Computers & Internet

1 Answer

Lode needed dlls for kernel


Use the ERD disk and repair the installation. Choose to replace all files, and then replace only the Hal.dll and Ntoskrnl.exe files.

If you can start another installation of Windows NT on the same computer, you can expand the correct Hal.dll and Ntoskrnl.exe files from the Windows NT CD-ROM. To do so, follow these steps:
  1. Boot to the working version of Windows NT.
  2. Start a command prompt.
  3. Change to the CD-ROM drive.
  4. Change to the appropriate folder on the CD-ROM (for example, I386 for Intel-based computers).
  5. Type expand hal.dl_ <systemroot>\system32 where <systemroot> is the path of the non-functioning Windows NT folder.
  6. Type expand ntoskrnl.ex_ <systemroot>\system32.
  7. Restart the computer into the other Windows NT installation.

Mar 27, 2009 | Microsoft Windows XP Professional

1 Answer

Problems with my Compaq Computer


This article will show you what to do. Please let me know how it works for you..thanks


http://byrev.net/tags/nt_kernel-error-1256

Jan 30, 2008 | Computers & Internet

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