Audio Issues

[HunchoGang]

Ok so this is what is going on. I currently play controller on pc for many of my games, and I have been doing this for a while now. Just yesterday I was playing controller on my pc and was playing Fortnite because my little brother was begging me to play it with him. When I went to the restroom and came back I saw my brother using my keyboard and playing Fortnite on my PC because I keep my keyboard plugged in even though I am playing with Controller. Long Story short, when I resumed play I couldn't hear anything. Keep in mind this is with my headphones plugged into my controller. I tested my headphones on my phone to see if they still worked and they did so that cannot be the issue. I feel as if he might have just pressed some keyboard combinations in which now I cannot hear anything. So now when I plug my headset into my controller, I cant hear audio from ANY of the games I play like MW, and Apex Legends. But when I unplug them from my controller and plug them directly into the pc, I can hear everything people are saying on mic and I can hear the game itself, but no one can hear me. Very weird issue at hand here. My current build is a Dell Optiplex 390 with an i7-2600 (3.4 ghz base, 3.8 ghz turbo), 16gb of 1600 mhz ddr3 ram, a gtx 1650 with 4gb of GDDR6, a 256 gb Kingston Sata SSD, and a 1tb HDD. Ill try to answer any questions you may have for me. I also have The Geforce Experience Overlay, and the Origin Overlay if that makes a difference.