New microphone prevents old one from working, no longer shows in sound preferences

I don't know if the brands are necessary, but I bought a new Turtle Beach PX22 headset for gaming. And since I plugged in the usb for its microphone (and it shows up in the Sound preferences), the sound preferences no longer display my Blue Yeti microphone. My Blue Yeti worked great until I tried my new headset, and now it simply will not show up any more. I'm guessing these drivers conflict with each other.

Is there a way to remove the sound drivers that were installed automatically for the new microphone so that I can use my old one again? Or is there something else I should try so that they will both work together?

Thank you!