Static removal is discussed widely so do some research.
However I learned to not use the laptop mic. I used an external. And I didn't supply my model number since it's not available anymore but there are hundreds of microphones out there. Try a few.
I use my laptop in lectures in uni with a microhpone. I recorded one of the lectures and i can hear the person speak but there is lots of static noisem i dont exactly know what its called. Is it possible to remove this sound so i can just hear the voice? Or is there some software that can record it without the static noise?