Microsoft KB Archive/939334

= The LED lights that represent certain keys on a USB keyboard do not resume their previous status after you resume a Windows Vista-based computer from sleep or from hibernation =

Article ID: 939334

Article Last Modified on 11/26/2007

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APPLIES TO


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

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
Consider the following scenario:
 * You are running a Windows Vista-based computer.
 * The computer has a universal serial bus (USB) keyboard connected to it.
 * You resume the computer from sleep or from hibernation.

In this scenario, the LED lights that represent the NUM LOCK key, the CAPS LOCK key, and the SCROLL LOCK key on the USB keyboard do not resume their previous status. These lights remain turned off regardless of the status of the NUM LOCK key, the CAPS LOCK key, and the SCROLL LOCK key.



WORKAROUND
To work around this problem, press NUM LOCK, CAPS LOCK, or SCROLL LOCK to restore the LED after you resume Windows Vista from sleep or from hibernation.



RESOLUTION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.To resolve this problem, add the FastResumeDisable entry to the Windows registry. To do this, follow these steps.

Note After you add this registry entry, the computer may take longer to resume from sleep or from hibernation.  Click Start, type regedit in the Start Search box, and then click regedit.exe in the Programs list.

If you are prompted for an administrator password or for confirmation, type your password, or click Continue. Locate the following registry subkey, and then click it:

 On the Edit menu, point to New, and then click DWORD Value. Type FastResumeDisable to name the new entry, and then press ENTER. On the Edit menu, click Modify, and then type 1 in the Value data box. Exit Registry Editor.</li></ol>

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

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MORE INFORMATION
For more information about a related issue, click the following article number to view the article in the Microsoft Knowledge Base:

929734 You may experience problems after you resume a Windows Vista-based computer from sleep or from hibernation

Keywords: kbtshoot kbbug kbexpertisebeginner KB939334

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