Why won't my xbox controller turn on?

Hello all,

I’ve had this controller since December 2019 and it has always worked fine. About a month ago I built a PC and wanted to use my xbox controller to play games on there. I plugged it in using a USB cable and it has been working fine since I first plugged it in. I was playing Forza Horizon 4 today with my controller plugged in, and then the controller randomly powered off while still plugged in.

I tried unplugging it and plugging it back in, nothing happened, I tried unplugging the cable and turning the controller on using the button on the controller (Which is what I usually do when I want to reconnect and resync my controller to my xbox) and nothing happened. I then plugged the same USB cable into my other xbox controller, and it turned on fine, why has my main controller stopped working all of a sudden?

When I hold the power button on the controller, the button lights up and turns off very quickly. Other times it has lit up twice and faded away.

• The batteries aren’t dead, I even used the battery pack from my other controller which works fine and still nothing.
• I have tried powering off the xbox, unplugging it for a few minutes and connecting the controller to the xbox with the USB cable, this didn’t work and I didn’t see how it would, since the last thing my controller was connected to way my PC.

Thank you for any help!