XBOX controller won't start, lights flashing

You said you were using rechargeable batteries how long have you had them and have you tried regular batteries in the way to rule out the power supply if not the batteries there is a small hole in the back of the controller to reset it.

Hi Nuons, my name is Daniel and I would be happy to help.

It is possible that this is a problem with the firmware update of the controller, so I recommend that you perform the following steps to update your controller. You mentioned that you play on PC, so the steps that I am going to recommend below are for PC:

1. Download and install the Xbox Accessories app from the Microsoft Store, and then launch it.

Link: https://apps.microsoft.com/detail/xbox-accessories/9NBLGGH30XJ3

2. Connect your Xbox wireless controller via USB or Xbox adapter.
3. If an update is required, you will see the Update Required message when you connect the controller. Download and install the update.

Information source: https://techpp.com/2022/08/10/how-to-fix-xbox-controller-blinking-or-flashing/

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Let me know if this information was useful to you and if the problem persists let me know and I will be happy to offer my help again. In any case, you can enter the aforementioned link to see more solution steps to resolve this problem.

Thank you for your attention, I wish you good luck.

Best regards,
Daniel.

Press rectangular button near the USB door of your Xbox. The lights will start flashing in circular order. Then press tiny button near the charging port on top of your controller. Within a second the console and the controller will find each other and then
you can start playing!

If this won't work, try replacing the batteries in your controller.

Hey - if you press the button on the top of the controller that looks like o))) the controller light will start flashing.

Then press the button on the left of the xbox - should start flashing too, and then slow down and stay on.

Let us know how it goes.

hey thanks for the help I tried turning it on manual and the controller sync but after that it won't sync anymore and the lights keep on flashing on the controller. when I try to go sync it with the 360 but the 360 doesn't pick it up and the lights still
flash on the controller. what does this also mean?