iMac's built-in microphone doesn't work on Windows 8 I'm running an up-to-date copy of Windows 8 on my iMac via Boot Camp and apparently it doesn't like the built-in microphone. I tested it with Audacity and Teamspeak, both of them just record absolute silence.

My Mac is a late 2012 27" iMac and I have the latest version of Apple's Boot Camp drivers installed. Is there anything else I can do to make my microphone work with Windows?
Turns out I'm dumb. For some reason the upper slider was set to 0, effectively silencing the microphone. Setting it to 100 solved my problem.