I am having a problem where I connect my Samsung Galaxy Tab S to my Windows 7 Home Premium computer via a USB cable. The computer does not recognize that a storage device is now attached, and so I cannot transfer files this way. The computer does make the sound that you would expect when a new device is plugged in to a USB port, but then it tries to find the driver for the device, and cannot find it, and so there is no communication. The cable does indeed cause the tablet to be charging, if that matters. How can I get the PC to communicate with the tablet?