Movie maker buzzing issue

Hi guys,

I am fairly new to this forum but I am glad to be a new member

I usually upload Youtube Videos and to edit those videos I use Windows Movie Maker.

I know it's not the best for video editing but it gets the job done.

Anyway, whenever I open the video and review it in the preview screen in the top left the only audio coming out is this loud buzzing noise

it still shows the audio waves as if me and my friend were talking but all that comes out is a Buzz...

If there is anybody that can help me resolve this issue that would be great, I have already tried uninstalling and reinstalling the program and I have updated my computer but it still won't help,

Thanks,

Matt