[HELP] Nexus 6 Speaker and Mic stopped working.

So I updated to the beta version Android N and after about a day my phone went bananas, kept rebooting, freezing, flashing wired lines and color on the screen and all sorts of nonsense. I managed to get it back to stock 6.0.1 but now my speaker and mic won't work and whenever I try to play a video on YouTube it says "There was a problem while playing Tap to retry and google play music says "Music playback error Couldn't play the track you requested. Anyone know what I can do or what piece of hardware I can replace to get the speakers and mic working again?