I put the sensor plug into the cable that came with the Xbox controler, after doing so I've had no problems.
I had this same problem last week, it's fixed now.I got my CV1 headset about 4 months and everything was working great. Then along came a Windows update and suddenly my system would not detect the sensor. The other devices connected to the USB hub worked just fine. I tried a lot of different things, even connecting to a 2.0 port, rebooted about 30 times, all to no avail. My fix, I hope it works for you too. From the device manager, Update the driver for the Rift Sensor, but not by using Windows to search for the latest driver. Instead, use the "browse my computer...", navigate to the Oculus folder/ sub folder to find the Rift Sensor driver. Once I did that it all worked again.Also, from the Device Manager, go into the properties popup for all your USB root Hubs, and de-select "Allow the computer to turn off this device to save power" located under the Power Management tab.Good Luck.
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