Microsoft KB Archive/314474

= &quot;STOP: C0000221 unknown hard error&quot; or &quot;STOP: C0000221 STATUS_IMAGE_CHECKSUM_MISMATCH&quot; error message occurs =

Article ID: 314474

Article Last Modified on 12/1/2007

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APPLIES TO


 * Microsoft Windows XP Professional x64 Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition

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This article was previously published under Q314474



SYMPTOMS
You may receive any one of the following Stop error messages:

STOP: C0000221 unknown hard error

\

STOP: 0xC0000221 unknown hard error

C:\Winnt\System32\Ntdll.dll (or another specific file or driver)

STOP: 0xC0000221 STATUS_IMAGE_CHECKSUM_MISMATCH

\

For additional symptom details, see the “More Information” section.



CAUSE
This problem may occur if the file that is described in the error message is corrupted. The following files are checked for integrity when Microsoft Windows XP starts:
 * All driver files (except those that are loaded by the system loader to start. the computer)
 * All dynamic-link libraries (DLLs), including User, Graphics Device Interface (GDI), Shell, Kernel, Ntdll, Crtdll, and others.

This problem may occur if you install an inappropriate driver for your hardware. For example, you receive one of the error messages that are described in the &quot;Summary&quot; section if you install a millions of instructions per second (MIPS) driver on an X86-based computer.

This problem may occur if an Iomega Zip drive is on the same integrated device electronics (IDE) cable as the hard disk drive.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.



RESOLUTION
To resolve this problem, obtain a new copy of the corrupted file or reinstall Windows XP. If you continue to receive any one of the error messages that are described in the &quot;Summary&quot; section after you reinstall Windows XP, a hardware problem or a network problem may exist.



MORE INFORMATION
This error message may be displayed in many different formats, including an error message that is displayed on a blue screen or an error message that is displayed in a dialog box. The type of format that the error message is displayed in depends on how much of the operating system was loaded when the corrupted file was detected.

Additional query words: prodnt checksum blue trap

Keywords: kbdriver kb3rdparty kberrmsg kbenv kbother kbprb KB314474

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