Move the dial all the way down on the Microphone boost.
Find the Levels tab, and look for the Microphone Boost tool.
Right-click on the Microphone bar, and then select Properties.
This is how to minimise background noise on laptop recordings. Follow the steps below for tips on how to minimise background noise from an audio recording. To some extent, any sound recording will generate background noise, but there's a lot that you can do to minimise interference.
Background or 'ambient' microphone noise can be a real pain, but there are tricks to help reduce it.