Sounds like it is recording both your audio input and the audio output from your PC. If you just want to record voice you should disable the recording of your audio output. If you are trying to record video and audio at the same time you are going to have to split your audio outputs so you only...
Not sure if this fits your situation, but this was happening to me over Christmas when I had my computer sitting on some thick carpet. My PSU was getting choked out with the lack of airflow and I would lose all USB power and my display, could still hear my games but needed to restart to get it...
Downloading a Bluetooth driver will not allow your computer to have Bluetooth if it doesn't have the hardware for it. Your best bet is to buy a usb Bluetooth dongle for your laptop, they are pretty cheap.
Amazon
Check out this thread on gaming audio. You could easily work something out on a budget, and it explains why gaming headsets are such a ripoff.
https://www.reddit.com/r/pcmasterrace/comments/4nabvv/gaming_audio_and_you_why_995_of_gaming_headsets/?
This happens to me sometimes with my Logitech G430. If I am tabbed out of something for a while I will lose my microphone input into my games as well as TeamSpeak. The only thing that works for me is closing out of everything using it and unplugging and replugging the usb audio driver. Pretty...
I prefer the Logitech headsets because they are relatively cheap and comfortable to wear for long periods of time. I had the Logitech G930 but the charging port went out. I now have the G430. Paid $50 and it was definitely worth the money.