From the hardware IDs there are no drivers available for Windows 7 from Windows update.
There are some downloads for Windows Vista in the following link from Sony under "Camera":
The "driver update" may update the driver. If you try to install, you may have to run the driver update in "Windows Vista" compatibility mode.
However, even an updated driver may cause the same issue so you may have to disable the webcam in the Device Manager to stop the error.
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