Webcam will not install

  LPB 11:07 09 Nov 05

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We are having problems with two new Logitech Quickcam Messenger webcams (my brother-in-law has the second one). The problems with each are identical. The installation appears to go OK, software installs, PC restarted. But at "plug in camera" screen, hardware wizard says "cannot install this hardware", and "did not detect any connected camera device". Have tried a new installation, but same problem. Via Device Manager camera is marked with a yellow question mark. Via Properties - "Drivers for this device are not installed (Code 28)". But I have watched the drivers going in during the installation process. Logitechs online support looks promising but seems to get into a loop - I cannot get a specific answer. We are both using Windows XP SP2.
Can anyone help, please?

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