I've had this headset for quite a while now, and a couple days ago it just stopped working completely. The mic doesn't work and there is no sound whatsoever. I've tried plugging in another headset to see if it was the PC, but that one worked. The headset is plugged into the back of the computer since the front doesn't work.
I also tried playing some sound to see if the green bar (look below) moved at all, which it did.
https://gyazo.com/f75e8dff89963acc93b527d7a4f6fe1e
I tried using the Sennheiser on a phone to see if it worked, and unfortunately, it didn't.
I don't know if this is useful, but I'm on a desktop computer.
I also tried playing some sound to see if the green bar (look below) moved at all, which it did.
https://gyazo.com/f75e8dff89963acc93b527d7a4f6fe1e
I tried using the Sennheiser on a phone to see if it worked, and unfortunately, it didn't.
I don't know if this is useful, but I'm on a desktop computer.