Microsoft KB Archive/258795

= Keyboard and/or Mouse May Not Work in Safe Mode =

Article ID: 258795

Article Last Modified on 2/28/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q258795



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you start your computer using the Safe Mode option, you may not have access to your mouse or keyboard, or both. However, if you start the computer normally, the devices work correctly.

Similar behavior may occur when you start the computer using the Safe Mode with Networking option.

NOTE: This applies to PS/2 mouse and keyboard.



CAUSE
This behavior occurs because of missing or corrupted registry subkey(s).



RESOLUTION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Restore Subkeys for Safe Mode
To resolve this issue, restore the missing or corrupted subkey(s):  Obtain a copy of the missing or corrupted subkey(s) from a Windows 2000-based computer that is working properly (subkeys mentioned here are the same on all Windows 2000-based computers):  Click Start, click Run, type regedit.exe, and then click OK. Locate the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal

 Click to highlight the appropriate subkey:

Subkey for keyboard {4D36E96B-E325-11CE-BFC1-08002BE10318}

Subkey for mouse {4D36E96F-E325-11CE-BFC1-08002BE10318}

 On the Registry menu, click Export Registry File. Save the file to a disk and give it an appropriate name.</li></ol> </li> On the Windows 2000-based computer that is experiencing the problem, start Windows Explorer.</li> Locate the file you created in the previous steps, and then double-click it.</li> Click Yes when the following dialog box is displayed:

Are you sure you want to add a:\ .reg to the registry?

</li> A second dialog box is displayed stating that the subkey was successfully added to the registry.</li></ol>

Restore Subkeys for Safe Mode with Networking
To restore subkey(s) for Safe Mode with Networking, use the steps in the previous &quot;Restore Subkeys for Safe Mode&quot; section and substitute the following registry key in step b:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network

Additional query words: mous mice keybord key board pointing device

Keywords: kbenv kbprb kbsafemod kbsetup KB258795

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