Hi Corey,
Kayece here, An Independent advisor and a user just like you. I will be happy to assist you today.
There might be a variety of causes for your Xbox controller to flash, such as a low battery, a pairing problem, a hardware problem, etc.
*If the Xbox controller is flashing slowly, it may not have enough battery life or not connected properly. Try unplugging and then replugging your Xbox controller.
*Use a Different USB Cable and see if it connected properly.
*Check if the device is connected properly on the device manager and update the driver. Open device manager > Look for the "Xbox peripherals" category > Find the controller in that category > Right click on it > Update Driver > Scan online automatically > Wait for update to finish.
If the issue still persist, please follow the steps provided on the links below.
For XBOX one controller, please go to the link below.
https://techpp.com/2022/08/10/how-to-fix-xbox-c...
If your controller is an XBOX 360 controller (Some can be use as solution for other xbox controller) , please go to the link below.
https://tencomputer.com/fix-xbox-360-controller...
https://windowsreport.com/xbox-360-controller-n...
I hope this is helpful. If you have any additional questions, please let me know and I will gladly assist you.
Kayece
Stay Safe!