Xbox one controller not turning on byr button

I think I have found the answer to your problem. I honestly thought it wouldn't work, but this did perfectly for me. Hopefully this will work for you and everyone who's having this problem.

1. Plug in your controller to your Xbox One via cable.

2. As the controller is turned on, hold the Xbox button and turn the controller off, not the console.

3. Have your Kinect plugged in and turned on and face it to your controller.

4. Turn on your controller and hold the controller sync button.

This should work for you as it worked for me. If not, try it this way with an added step:

1. Plug in your controller to your Xbox One via cable.

2. As the controller is turned on, hold the Xbox button and turn the controller off, not the console.

3. Have your Kinect plugged in and turned on and face it to your controller.

4. Press the sync button on the left-side of your Xbox One console.

5. Turn on your controller and hold the controller sync button, facing the controller towards your system and Kinect.

Turn on your Xbox One.
Turn on your controller by pressing and holding the Xbox button. The Xbox button will flash.
Press and release the Pair button on the Xbox.
Xbox One S console. The Pair button is on the front lower right, next to the Infrared receiver and blaster.
Within 20 seconds, press and hold the controller's Pair button (a circular button on top of the controller as you hold it in your hands) until the controller's Xbox button flashes a few times. That means it's searching for a console. The Xbox button stays lit once it's connected. Hope this helps

Hello! for controller troubleshooting follow this link : https://support.xbox.com/en-CA/xbox-one/controllers/wireless-controller-solution

Or, If the controller might have been bricked and you have an Xbox One, you can try this method that has worked for some people including me:

- Power down the Xbox One by holding the power-button down for 7 seconds (Until it powers off)

- Unplug the Xbox One power-brick from the wall for 5 minutes, to be sure there everything is 100% discharged.

- Plug the controller into one of the Xbox One USB ports. (preferably one of the back USB ports). Make sure nothing else is plugged in.

- Try to turn on the Xbox using the controller's button. If it doesn't work, turn on the Xbox One using the console's power button.

- While the Xbox One is booting up, try to turn on the controller by pressing the controller's Xbox button. (I tried about every 2 seconds)

The controller turned on after I hit the Xbox button the 3rd time for me while the console was booting up. If it turns on and works, head to the Xbox Accessories app on the console and it should be on the latest controller firmware.

Let us know if this worked for you

Hi Tony, with your second controller try and manually sync it to your Xbox one, see if it works for you, doing this fixed this issue for me.

support.xbox.com/.../connect-a-wireless-controller

1. Turn on your Xbox One console.

2. Insert AA batteries (or rechargeable batteries from the Xbox One Play & Charge Kit) into the controller. See Using AA batteries in your Xbox One Wireless Controller.

3. Turn on your controller by pressing and holding the Xbox button until the controller turns on. (The Xbox button is the larger circular button located in the middle of the controller near the top.) The Xbox button will flash, indicating it's not yet connected
to a console. If the Xbox button is lit solid, the controller is already connected.

(Note If the controller doesn't turn on, check the batteries. If you're using rechargeable batteries, make sure that they're charged.)

4. Press and release the connect button on the console. (The connect button is a small circular button located around the corner from the disc tray.)

5. Within 20 seconds, press and hold the black connect button on the back of the controller until the controller's Xbox button quickly flashes a few times, indicating that it's searching for the console. It switches to a solid light when it's connected.
(The connect button is a small circular button located on the top of the controller as you hold it in your hands.)

Your controller is now connected to your console. Repeat this procedure for every extra controller that you want to add.

POWERCYCLE CONSOLE​​​
​​​Complete

-Yes, it is only happening with one controller.

"Press and hold the Xbox button for 5-10 seconds, until the controller turns off.
Wait a few seconds, then press and hold the Xbox button again to turn the controller back on."

-Nothing happens, controller will not turn off.

Thank you in advance for your time and help