Can you post a screenshot of the Device Manager for us? It will be helpful to see what's under Flash Drives you mentionned.
Those drivers might be needed & updated aswell, i know Texas Instruments or SD Cards Readers too, but depend of your machine now.
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You will find on the screenshot the drivers for my webcam and those are microsoft ones.
None from the manufacturers there...Therefore i need the manufacturer application software to be installed in order the camera to works.
It doesn't work with the only Microsoft Drivers, you'll have to install the manufacturer one aswell (you could grab Vista x64 one if none for Windows 7 x64).