I copied this from one of my other posts, but it may be that you connected the camera BEFORE installing software:- The logitech software will be responsible for saving your settings, the windows driver may not have this facility. Worse still you may have just connected the camera and not be using the software. This will cause the camera to use the windows driver and result in poor quality.
Installing the camera first sometimes makes it use the windows driver. The QC9000 is unusual in that this order is important. Sometimes you dont even get maximum resolution if you do it in the wrong order.
Completely uninstall the camera and software (using the control panel -> system -> Hardware -> uninstall and also use the Uninstall Programs) , reboot, then insert the logitech driver cd. Connect the camera only when told to do so by the software. This will then set it up correctly.
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