I was trying to access the camera and mic on my 15 R3 this morning for an online web chat, and the page refused to load, claiming it couldn't access my camera and mic. I eventually fixed the problem by plugging in an external USB mic, at which point it all started working. Looking through device manager with the USB mic unplugged, I could not find a mic anywhere on my system. Does the 15 R3 have a builtin mic? If so, then mine isn't working properly, and I'd like to try and get this fixed.