A Windows Vista-based computer stops responding when you resume the computer from hibernation.

Note This problem may occur if a system device configuration changes when the computer is in hibernation.

This problem occurs because the Peripheral Component Interconnect (PCI) device driver does not correctly update the device settings to reflect the new configuration.

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:

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.

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

Windows Vista, 64-bit versions

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.

For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base: For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Hibernation

Hibernation is the S4 power-saving state. Hibernation saves open documents and programs to the hard disk, and then turns off the computer. When you are ready to use the computer again, the computer comes out of hibernation in seconds. Then, the computer restores all the open programs and documents that were saved. Hibernation uses the least amount of power of all the Windows power-saving states.

Unlike sleep, hibernation does not require any power to save open documents and programs on a mobile computer. Because sleep requires a small amount of power to maintain itself, Windows automatically puts the mobile computer into hibernation after some time to help conserve battery power.

Additionally, because hibernation on a mobile computer does not require any power to save open documents and programs, Windows also puts the mobile computer into hibernation automatically when the battery charge reaches a critically low level.

You should use hibernation on a mobile computer when you know that you will not use the mobile computer for some time. Also, use hibernation when you know that you will be unable to charge the battery during that time.

Sleep

Sleep is the S3 power-saving state. Sleep saves all open documents and programs. Sleep also allows for the computer to quickly resume full-power operation. Typically, this process occurs within several seconds. For example, you can put the computer to sleep as quickly as you can pause a DVD player. The computer immediately stops what it is doing and is ready to start again when you want to resume working.

To put a computer to sleep, click Power on the Start menu.

Notes

• You may be able to press a sleep button or close the lid on a mobile computer to put some computers to sleep.
• When the computer is asleep, the hardware lights may slowly flash or change color. To learn more, see the documentation that is included with the computer. Alternatively, visit the Web site of the manufacturer.
• The computer may automatically sleep after a period of inactivity.