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when i am using my macbook pro (for school) just chrome and office 365 apps. my macbook wil make loud fan noises.

It can! How about installing a program that can help you see whats happening! TG Pro. When you sense the fan is making too much noise take a snapshot of the TG PRo’s main window and post it here for us to see. Don’t forget to get the sensors at the bottom of the listing and the fan’s! Adding images to an existing question