The microphone picks up the sound from the speakers and the PC sends it back to the speakers, even louder. And so on, and so on. It ends with a continuous beep.
It should stop if you lower the speaker volume from the PC or have the microphone further away from the speakers.
OS : microsoft XP professional
when the computer is turned on, a long noise is heard through speakers..it seems a long beep sound.. when i turned off mic on the volume control, the sound stops and that's when the time i can hear a playback sound..but i want to input mic through stereo phones... how can i do this..? also i have installed A4 TECH PC Camera H #2... can anyone help me?