Microsoft KB Archive/938239

= Error message on a Windows Vista-based computer that has a storage device inserted into a card bus adapter: &quot;STOP: 0x00000050&quot; =

Article ID: 938239

Article Last Modified on 8/29/2007

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APPLIES TO


 * Windows Vista Home Basic 64-bit Edition
 * Windows Vista Home Premium 64-bit Edition
 * Windows Vista Business 64-bit Edition
 * Windows Vista Enterprise 64-bit Edition
 * Windows Vista Ultimate 64-bit Edition
 * Windows Vista Starter
 * Windows Vista Home Basic
 * Windows Vista Home Premium
 * Windows Vista Business
 * Windows Vista Enterprise
 * Windows Vista Ultimate

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SYMPTOMS
When you start a Windows Vista-based computer, you may receive a Stop 0x50 error message that resembles the following:


 * STOP: 0x00000050

PAGE_FAULT_IN_NONPAGED_AREA

This problem occurs on a computer that has the following hardware installed:
 * A card bus adapter
 * A storage device that is inserted into the card bus adapter

The storage device might be one of the following:
 * A secure digital (SD) card
 * A compact flash (CF) card
 * An external Serial Advanced Technology Attachment (eSATA) hard disk drive that is running in SATA Advanced Host Controller Interface (AHCI) mode



CAUSE
This problem may occur if the resource requirements of the installed devices do not match those requested by the BIOS. In this situation, a rebalance of AHCI registers occurs. This behavior triggers the Stop 0x50 error message.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista, 64-bit versions


WORKAROUND
To work around this problem, remove all storage devices from the card bus adapter before you start the computer.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The symptoms of a Stop error may vary, depending on the failure options that have been configured in Microsoft Windows. For more information about how to configure system failure options, click the following article number to view the article in the Microsoft Knowledge Base:

307973 How to configure system failure and recovery options in Windows

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: STOP BugCheck Bug Check BSOD hang freeze NMI bluescreen blue screen

Keywords: kbbug kbfix kbqfe kbprb kbexpertiseinter kbhotfixserver kbwinvistapostrtmfix KB938239

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