internal microphone does not work after updating to 10.9.5
After hard drive died and replaced with a new hard drive, 10.9.5 was installed. Ran diagnostics and reset PRAM, but the internal microphone no longer works. Early 2008 iMac, 4GB RAM, 2.4 Ghz processor. Any suggestions?
iMac, OS X Mavericks (10.9.5)