Macbook Air making whirring noise and running slow

Question

Macbook Air making whirring noise and running slow

Hi there,

My Macbook air is making this odd whirring noise (presumably from the fan) since yesterday evening. It is not loud but I never heard it making this kind of noise before. I also noticed that it is quite laggy when I type, opening apps, switching between apps, etc. I decided to factory reset the macbook but the problem still persists. Any ideas of what it could be and how to fix it? I'm thinking of bringing it to the Apple store as a last resort only.

MacBook Air, OS X Yosemite (10.10.3), Macbook air 2013 model

Posted on May 2, 2015 6:49 AM

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Answer 1

Best reply

John Galt

Level 10

141,210 points

May 2, 2015 11:38 AM in response to misspockybean

System performance problems for reasons that cannot be isolated to any other cause justify an SMC reset. Be sure to read the procedure carefully and follow all the steps exactly as written, even if they seem inapplicable or trivial.

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Answer 2

CT

Level 7

23,987 points

May 5, 2015 7:31 AM in response to misspockybean

Have a look at Activity Monitor (Utilities folder), select "All Processes" from the View menu, and sort by CPU. The goal is to see if any apps or processes are using an inordinate amount of CPU. This is one possible cause of your symptoms.

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