Hmm, it looks like an outside program is running in the background.
I just did an internet search and it seems like they may be added by Nvidia Gforce experience, (which I don't have installed so cannot check), and is used by Nvidia shadowplay. I believe this is designed to record gameplay and runs in the background. If it is shadowplay, it may need disabling in the Nvidia experience control panel, though looking on the net, there are different ways of turning it off, depending on installation.
Do you have Nvidia GeForce experience installed ?. if so, I'd check that first. The fact it is a microphone and what looks like a pause button, does suggest to me there is some screen recorder running in the background, maybe check using task manager. (I could be wrong though).