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Unibody MacBook Pro models with 13" displays produced from 2009-2012.

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Running slow after plugging in the fan

You seams knowing about Mac i had a really hard question for you. I bought my MBP use and the first day i have it it was hot but really hot i was like it's maybe normal (it's my fist one) but 3 weeks later my friend told me that is actually not normal. So i look on internet and they talk about cleaning the Fan. So i start the process i open the cover and figure that actually the fan was unplug so i plug the fan back and now my MBP is so Slow and lagging it takes 17 minutes to boot what could be the problem ? ( the logic board, thermal paste, heatsink or the fan)

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That is quite strange - run Apple Diagnostics on the MacBook by pressing D while it is starting up and check to see if any error codes show up. Also, can you open up Activity monitor and check if there is a process called "kernel_task" taking up a large percentage of the CPU? I suspect that there could be an issue with a thermal sensor, or maybe even a tachometer/motor control data line going to the fan could be faulty.

Sam

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Alexandre Houle will be eternally grateful.
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