Hello,IsaacMacQueen
Thank you for posting in the Microsoft community.
When you restart your headset or computer, the speakerphone will be enabled automatically, this should be because you have used the device to connect to the computer in the past, you can right-click the "Start" icon, click "Device Manager", expand the list to find the device program that you are using, right-click to uninstall it, and then restart your computer. You can right-click on the "Start" icon, click on "Device Manager", expand the list to find the device program you are using, right-click to uninstall it, and restart your computer.
I wish you all the best and please feel free to contact me with any questions you may have, I look forward to hearing from you!
Best Regards,
Rota Ye |Microsoft Community Support Specialist