I'm on windows 10 and I have had this controller for a few years. All of a sudden, it decided to stop working the moment I launch a game. I usually play using a wire to plug directly to my PC. The controller appears to be working fine when I turn my computer on. I can launch steam, go to settings, controller, begin test, and it all seems to be in order. Every button and stick works fine. The problem is when I want to actually play anything. As soon as I load a game, the controller works fine for a few seconds and then shuts down. The light in the Xbox button in the center turns off and the controller won't respond any more. It just won't turn on. I try changing to a different USB port, unplugging and re plugging, and sometimes it works. Other times, the controller simply shuts down until I restart my computer.

At this point, it will remain unresponsive no matter what I do, besides the system reboot. The controller vibrates a moment whenever I plug it in, even if it doesn't respond at all. When this happens, the xbox button remains off. The button lights up only when I press it, and not when I plug it. So I know there's power going to it. If I turn on my PC's blue tooth, I can even connect. But the connection is intermittent and it picks the worst times to disconnect. I set the USBs so that they would never turn off to save energy. I don't know if I have some weird setting on steam that makes it so "when whatever button is pressed, turn off controller" or something. It seems to particularly dislike the left bumper and trigger. Maybe there's no actual rhyme or reason to this. Can anybody help?