Hp Dv6000, problems recording with built in microphones

I hook up nicer microphones to my computer to record but the built in ones still pick up the noise i believe, it records fin for about 2 seconds then everything sounds like ****, like if you blow into a microphone. How do i go about turning these built in mics off without turning off the mic input jack? I have the same problem as well. When you try to record anything it's good for about 2 seconds and then the sound becomes muffled and crappy and then it will let off again after a while and then come back. I even tried using the jack in the front of the computer but that does the same thing when i try to record. I was going to use this computer primarily for recording music but i can't do that if the quality is compromised. Disabling the mic will not fix the problem. We want to be able to record with the mic not never use it. Why would HP put a mic in if they didn't expect people to use it? I think it needs new device drivers maybe. idk though, please help if you know