Is the fan air intake screen on the bottom clean? I would get a can of air and with the laptop off, blow out the intake and exaust as well as you can. With the lid closed, shake it and see if anything rattles.
I did try that with a hair dryer. Still it rattles. Any more ideas?
A hair dryer doesn't put out the air pressure a can of air does.
Yes, I have another idea. If it Rattles, something is loose or broken. Either take it apart and see what it is or arrange for warranty repair.
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