I have a Canon Powershot S40 camera. I have correctly installed the WIA drivers (on numerous occasions because of this problem!) and I can see that the camera drivers are all there when I check the device manager. However, the camera appears as an 'Unknown Device' and is not recognized.
When I first uninstall then reinstall the drivers then plug the camera in via the USB cable, I see that the camera is recognized by my computer via the little pop up windows in the bottom right of the screen. Alas, nothing much else happens and the Windows Camera and Scanner Wizard does not start up.
It is not a problem with the USB cable nor the drivers as I can successfully connect the camera to my Win XP laptop (my other computer).
Troubleshoots so far have included the usual uninstall/reinstall, right-clicking on 'Unknown Device' and deleting it and also deleting all my USB drivers and reinstalling them. All to no avail.
I do have a Logitech webcam but I have unplugged it now in the hope that that would avert the USB conflict that may have been happening. Again, no joy.
I have contacted Canon and scoured their website(s) for some advice. They have none. They tell me that it is an operating system problem, hence my posting of the question here.
I hope someone can help me.