I just recently bought a Macbook Mid-2012 Non-Retina laptop on Craigslist and it is in amazing condition except the awful creaking noise that comes from it. it appears to look like a hinge problem because when I push on the hinge it makes a low creaking sound. I called Apple and they told me to bring it in and it would cost some $. Any ideas? If it is only cosmetic I won't really care but wanted to know if it were harmful. Video of sound below
[video="https/www.youtube.com/watch?v=c7fLvWhuj48&feature=youtu.be"][/video]
[video="https/www.youtube.com/watch?v=c7fLvWhuj48&feature=youtu.be"][/video]