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A USB keyboard does not work after you restart a Windows Vista-based computer that has an NVIDIA 680i motherboard installed

Consider the following scenario:
  • You are running a Windows Vista-based computer that has an NVIDIA 680i motherboard installed.
  • You plug a USB keyboard into a USB port on the NVIDIA 680i motherboard.
  • You restart the computer.
In this scenario, the keyboard does not work. Additionally, a yellow exclamation mark (!) appears next to the USB device in Device Manager.

If you disconnect and then reconnect the keyboard while Windows Vista is running, the keyboard begins to work. However, this problem occurs again after you restart the computer.
This problem is caused by a timing issue. This timing issue occurs because the Usbohci.sys driver does not comply with USB specifications.

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

Hotfixes and security updates that are included in SP2 for Windows Vista Service and for Windows Server 2008

For more information about the hotfixes and the security updates that are included in SP2 for Windows Vista and for Windows Server 2008, visit the following Microsoft TechNet Web site: -Note:Currently, the list of hotfixes and security updates is available only in English.

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 any other hotfixes.

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, 32-bit versions
File nameFile versionFile sizeDateTimePlatform
Update.mumNot Applicable2,73329-Nov-200717:11Not Applicable
X86_usb.inf_31bf3856ad364e35_6.0.6000.20729_none_c98f27dd2a717e39.manifestNot Applicable2,35629-Nov-200717:11Not Applicable
X86_usbport.inf_31bf3856ad364e35_6.0.6000.20729_none_bc59205a1f8ccc20.manifestNot Applicable5,87029-Nov-200717:11Not Applicable
Usbd.sys6.0.6000.207295,88829-Nov-200702:28Not Applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_usb.inf_31bf3856ad364e35_6.0.6000.20729_none_25adc360e2ceef6f.manifestNot Applicable2,35829-Nov-200717:15Not Applicable
Amd64_usbport.inf_31bf3856ad364e35_6.0.6000.20729_none_1877bbddd7ea3d56.manifestNot Applicable5,87229-Nov-200717:15Not Applicable
Update.mumNot Applicable2,74929-Nov-200717:11Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, 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
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Article ID: 945680 - Last Review: 12/11/2007 13:45:04 - Revision: 1.3

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

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