Plug-and-Play Webcams do not work.

I have two computers, both running Windows 7 Ultimate 64 - bit, literally installed from the same disk with the same updates, etc. On one of these computers (the one I use the least) my two plug-and-play zero configuration webcams work well and instantly. Instantly I prefer to use, they do not work at all, usually errors to the effect of "the device is already in use", although I have largely ensured that it is not.

The major difference significant between these two computers on the front of the webcam is that the computer that is running, the driver, a times usbvideo.sys Details and ksthunk.sys loaded to the device, while one who does does not only usbvideo.sys loaded to it. He also stubbornly refuse load other drivers, like "windows determines that the best driver is already installed.

It seems unlikely a typical software conflict because the two systems have the same software and when the question began the work machine lacked any software work there is no.

In addition, tools like Microsoft Fixit or sfc/scannow suggested that the machine is perfectly configured, and no combination of uninstall / install drivers and reboot seems to have had no effect.

I imagine that a clean install of windows would probably solve the problem, but I'd rather not have to resort to that.

Note that none of these webcams have all the drivers for the seller: they are designed to use plug-and-play. Yes, I checked.

Does anyone have an idea what could be the cause, or how I could solve this problem without resorting to the nuclear option?

http://forums.Logitech.com/T5/webcams/QuickCam-for-Notebooks-Pro-not-working-on-64-bit-Windows-7-using/TD-p/414106

This link had a few promising information to, my registry contained no ksthunk in the appropriate location. I'll have to see if it works after restart.

Edit: He did indeed. Webcams, works fine now.

Tags: Windows

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