Try resyncing even if it isn't connected to a different console.

How to fix xbox one controller won't turn on. Try using the controller via usb. It will drain the remaining power on the console. This step will clear out any mismatched signals.

If this fails, connect the controller to the console with a usb cord and then try again. To reset the internal power supply, follow these steps: Turn your controller off and on.

I've tried changing the batteries. Let's shut down the xbox one system completely. I also tried it on a nother xbox one controller and it did the same thing.

Afterward, the button will begin flashing. Wait for 40 min suites for its components to cool off. Try updating on your pc.

Controllers can unsync for other reasons, and you may just be dealing with a fluke occurrence. Navigate to devices & connections > accessories. When i turn on my controller it flashes for a good sec then turns off.

To rule it out, just try to. If your controller just died and doesn't turn on anymore, this. After 15 seconds, press and hold the power button for 10 seconds.