gloves2ali

Tech Rank 1/5

my macbook actually can play sound thru the built in speakers... 2 mnths back.. i bought a altec lansing speakers and i pluck in the audio jack.... until today i take it out no sound come from the build in audio speakers... and the audio jack have red beam from the macbook.. i try going to the system prefernce to get it done.. but at the output section cant click... it stated no audio output...