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I have tried everything and my MacBook Pro 13" 2014 running BIG SUR 11.7.9 is running very slow. Rein stalled OS, reset NVRAM, SMC etc no difference, Took to the workshop "Buy a new one" was the response.
I have uploaded pictures of the diagnostics as requested in the image area.
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What is your RAM size and what is your SSD size and how much free space does it have?
这个答案有帮助吗？
16GB RAM and 512GB SSD over 50% of SSD free
290GB free of 500GB of the SSD
note kernel_task using 235% of CPU constantly
@george81838 - See what running the onboard diagnostics tells you. Restart the system and press the D key
There may be an issue with the System Management Controller
(SMC).
Reference Code: PFM006
There may be an issue with the power management system.
Reference Code: PPN001
For more information...
To determine your support and service options, Apple would like to collect your
Mac computer's serial number and reference codes.
Your Mac will start up in macOS Recovery and you will be able to access your
support and service options through Safari.
Serial number:
Also fan running all the time but unit cold and aired
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