Loud grinding noise coming from laptop

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I have a Toshiba Satellite laptop I love!
A couple days ago it started making the loudest sound I shut it down right away because it sounded like it was going to blow up. Can anyone help me diagnose the problem. Might I buy a replacement and repair at home so I can keep this running? It seems to function okay it just sounds horrible. I have a video to post so that you can listen.
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