Hi! I am having issues with an xbox 360 controller. I am using it for windows, and am currently running windows 8.1. I have the drivers installed, and have reinstalled them. Neither of my controllers are working on any of the USB ports. I have run joy.cpl and found that the controllers are turned on, but no button pressing is being communicated. This is not an issue with the controllers, as I have tried more than one, and this problem persists with all of them. Any Help???