Turn off the Xbox controller
Remove the batteries or disconnect the battery pack
Wait 10 seconds
Press and hold the Xbox button for 5 to 10 seconds
Reinsert the batteries or reconnect the battery pack
Turn the controller back on
If needed, resync the controller with the Xbox console or PC
If the controller still has issues, power cycle the console or restart the PC
If the controller is still unresponsive, update the controller firmware through Xbox Accessories app