Volume buttons not working on Dell Inspiron 15

Hello, and thank you for your help in advance. I have run into a problem where I cannot change the volume for my laptop without going into the settings page. I have volume buttons on my keyboard, but when I press them the volume rectangle pops up at the bottom of the screen, but the numbers never change (stuck at 44). So, I know the button works, it does just not affect anything. When I press the volume settings in the bottom right corner, I can change the sliding button from 0-100, but it doesn't actually affect the sound. The only way I can change it, is to go to settings->system->sound->volume mixer and use the sliding button for Microsoft Edge. I feel like I've tried changing all of the settings, but I'm obviously missing something. I don't remember doing anything that caused the problem, it just kind of happened one day when I was on a Zoom call.

Thanks again!