Device Manager is empty

I recently upgraded to vista 64 bit microsoft windows update and now my lap top integrated cam and sound card are not recognized by the computer.  No devices are listed in the Device Manager.

I tried to reinstall the drivers, but that has not worked.  I solved the problem by going to the system restore and I took the listed first restore point which was two days before the update.  System Restore solved his problem, but I had to reinstall the driver of web cam and web cam Manager.  After reboot, everything works and the computer is running a lot faster now.

Tags: Windows

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    Perhaps because the service Plug-and-Play is turned off (disabled).

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    ·         You have installed Windows XP Service Pack 3?

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    None of the items appear in the device list manager when you open

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    http://support.Microsoft.com/kb/311504

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    SYMPTOMS

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    CAUSE
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