Xbox 360 Controllers not syncing

Have you synced the controller to the Xbox 360 system? Turn on the Xbox 360 system and controller, on top of the controller there should be a small button, hold that button. On the White Xbox 360 or Black Xbox 360 elite, there should be a button too, press
it and your controller should sync up with the Xbox, the controller will confirm this by flashing.

On the Xbox 360 slim, the button is located inside the USB bay.

You have to push the sync button on the controller (Next to LB bumper) and the sync button on the front of the Xbox 360 at the same time for the controller to sync properly.

Hi

Have you tried to sync the controller with you Xbox 360 as syncing it with another console will mean the controller will no longer be recognised by your console.

The Fearmaster is a Xbox 360 controller and that cannot be synced to the Xbox One.

To get the controller and console synced, are you pressing both sync buttons on your controller and the Xbox 360?

The sync button on the controller is the small circular button on the top in between the two bumper buttons (LB/RB) and the small button on the front of the Xbox 360 respectively which should show a symbol similar to the following depending on which way you're
looking at it: (((

Of note, I was referencing my Xbox 360 Arcade model as a description as I don't own the new Xbox 360 Slim. So if you do have an Xbox 360 Slim model then the Sync button on the console should be on the front to the right next to the USB ports.

Once you have pressed both sync buttons then your controller and console should be synced up as both should flash and will show the current position the controller is synced to, such as "Player 1" which is the top left light quadrant on the controller and console.

If you're still having trouble even after attempting to do that then please come back and explain the issue more. Hopefully this will help you out though.