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A Windows Vista-based computer that uses a PCI-E graphics device may stop responding when you wake the computer from sleep

When you wake a Windows Vista-based computer from sleep (S3), the computer may stop responding (hang). When this problem occurs, the screen first becomes black. Then, you may eventually receive a Stop error message that resembles the following:
*** STOP: 0x0000009F(parameter1, parameter2, parameter3, parameter4)
This problem may occur if the following conditions are true:
  • The computer is using a PCI-Express (PCI-E) graphics device.
  • The computer's firmware grants native support to the operating system for PCI-E features.
  • PCI-E Active State Power Management (ASPM) is enabled on the PCI-E graphics device.
This problem may occur intermittently.
This problem may occur if the PCI-E graphics device does not correctly exit the ASPM L1 power-state negotiation stage when a link-retrain sequence occurs on the PCI-E link.

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


No prerequisites are required.

Restart requirement

You must restart the 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, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Swenum.sys6.0.6000.2059815,41615-May-200702:25Not Applicable
Update.mumNot Applicable2,03015-May-200717:13Not Applicable
X86_machine.inf_31bf3856ad364e35_6.0.6000.20598_none_b85cfa98dae9b436.manifestNot Applicable8,43815-May-200717:15Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_machine.inf_31bf3856ad364e35_6.0.6000.20598_none_147b961c9347256c.manifestNot Applicable6,99415-May-200717:20Not Applicable
Update.mumNot Applicable2,03015-May-200717:13Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
The symptoms of a Stop error may vary, depending on the failure options that have been configured in 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
STOP BugCheck Bug Check BSOD hang freeze NMI bluescreen blue screenWinx64 Windowsx64 64bit 64-bit

Article ID: 937500 - Last Review: 05/14/2008 21:53:47 - Revision: 3.1

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