Have you tried updating the software? I know windows can be a fickled thing and as soon as they decide they want to update something, Something will break and stop working.
You can easily find the software in the MS Store, assuming you are on windows Open up store and look for Xbox Accessories. You will need to do this with a Cable as they don't like doing it over Bluetooth witch seems won't be an issue for you.
IF that doesn't work can you also give a bit more details about what games you are playing with it on what platform. I have several platforms I play on one of them being Steam. there can be some issues there as well.
Edit: forgot to post a link to a Guide on how to update.
You can update your Xbox controller even if you don't have an Xbox.
www.howtogeek.com