I bought this laptop used. It came with 10.6.8 then i upgraded it from 80gig hard drive to a terabyte with 3 gigs of ram. Plus, i installed 10.8.4. When I tried out oovoo and skype, the mic was not working so I did my research and saw bits and pieces about the microphone having problems with 10.8.4 installed. So, I tried out SL again and still no results. I went to the sound settings on both OS's and turned the mic volume to max. There seems to be a slight change but the light only stays in the blue area. Please help me

