When you install the Microsoft LifeCam software and plug in the LifeCam, it does not work. In Device Manager, the properties for the LifeCam entry display a code 39 or a code 19.

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This behavior occurs when you have previously installed a Logitech webcam.

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To resolve this behavior, use one of the following methods.

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Method 1

1.	Install the most recent version of the Logitech Software. To do this, visit the following Logitech Web site: http://www.logitech.com/index.cfm/support_downloads/downloads/&cl=sg,en (http://www.logitech.com/index.cfm/support_downloads/downloads/&cl=sg,en) Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information. Note If you block cookies at this Web site, you cannot download the software.
2.	Start the downloaded file, and then click Custom on the Setup Type page.
3.	Follow the prompts to install the Logitech Camera Driver.
4.	Restart the computer.

The LifeCam should work and code 39 or code 19 should disappear from Device Manager. To remove the Logitech drivers, use Add or Remove Programs in Control Panel.

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Method 2

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1.	Click Start, click Run, type services.msc, and then click OK.
2.	Double-click Logitech Process Monitor.
3.	In Startup type, select Disabled.
4.	Under Service status, click Stop, and then click OK.
5.	Close Services.
6.	Click Start, click Run, type regedit, and then click OK. Note You might not find all the following subkeys or entries. However, you should find at least one.
7.	In Registry Editor, locate and then click the following subkey: HKEY_LOCAL_MACHINE\SYSTEM\CONTROLSET001\CONTROL\CLASS\6BDD1FC6-810F-11D0-BEC7-08002BE2092F If the right pane contains Lower filters: lvmvdrv, right-click this entry, and then click Delete.
8.	In Registry Editor, locate and then delete the following subkey: HKEY_LOCAL_MACHINE\SYSTEM\CONTROLSET001\SERVICES\LVMVDRV
9.	Locate and then click the following subkey: HKEY_LOCAL_MACHINE\SYSYTEM\CONTROLSET003\CONTROL\CLASS\6BDD1FC6-810F-11D0-BEC7-08002BE2092F If the right pane contains Lower filters: lvmvdrv, right-click this entry, and then click Delete.
10.	Locate and then delete the following subkey: HKEY_LOCAL_MACHINE\SYSTEM\CONTROLSET003\SERVICES\LVMVDRV
11.	Locate and then click the following subkey: HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\CLASS\6BDD1FC6-810F-11D0-BEC7-08002BE2092F If the right pane contains Lower filters: lvmvdrv, right-click this entry, and then click Delete.
12.	Locate and then delete the following subkey: HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\LVMVDRV
13.	Close Registry Editor.
14.	Click Start, click Run, type devmgmt.msc, and then click OK.
15.	In Device Manager, expand Imaging Devices, right-click Microsoft LifeCam, and then click Uninstall.
16.	On the Action menu, click Scan for hardware changes. If you are prompted to update the drivers, click Yes.

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Method 3

1.	Unplug the LifeCam.
2.	Click Start, right-click My Computer, and then click Properties.
3.	On the Hardware tab, click Device Manager.
4.	Expand Universal Serial Bus controllers.
5.	Right-click every device under Universal Serial Bus controllers, and then click Uninstall to remove them one at a time.
6.	Restart the computer and let the computer reinstall the USB controllers.
7.	Plug in the LifeCam.

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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.

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