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Question: Fan Noise and lagging

My MacbookPro is nearly 5 years old now and has suddenly started having problems with constant lagging no matter what I am doing on my laptop. As well as the fan always being on high, despite my laptop being cold. It is very noisy, and hard to use the laptop as the lagging is interferring with what work I am trying to do.


I have tried restarting my MacbookPro, clearing history, clearing caches, checking all my iOS are up to date and making sure there is enough memory space. I haven't dropped or caused any damage to my laptop so am wondering if there are any solutions anyone can think of that I would be able to do myself.


Thanks 🙂

MacBook Pro, macOS High Sierra (10.13.3)

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Start here - About fans and fan noise in your Apple product - Apple Support - particularly the bit about resetting the SMC if all else fails.


I also suspect there may be a process running on your machine which is eating a lot of CPU time. Activity Monitor can help show what processes are running and their CPU load. Spotlight, as mentioned in the above article, may well be a culprit.

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Mar 5, 2018 1:04 AM in response to jjliobgvd In response to jjliobgvd

Start here - About fans and fan noise in your Apple product - Apple Support - particularly the bit about resetting the SMC if all else fails.


I also suspect there may be a process running on your machine which is eating a lot of CPU time. Activity Monitor can help show what processes are running and their CPU load. Spotlight, as mentioned in the above article, may well be a culprit.

Mar 5, 2018 1:04 AM

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Mar 4, 2018 3:39 AM in response to jjliobgvd In response to jjliobgvd

If you are re-setting the SMC you should be prepared to do it three or four times. Don't ask me why, it has always been that way. I also think you should download, run and publish the results of this program.


https://etrecheck.com/


It is safe to do so and will help us with detail that we can analyse on your behalf.

Mar 4, 2018 3:39 AM

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Question: Fan Noise and lagging