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Mac Pro는 데스크톱 Mac 시리즈의 2013년 개조판으로 알려져있습니다.

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2013 Mac Pro runs much slower than normal and fan runs at full speed

Does anyone have a suggestion as to what could be causing this? I have zapped the pram but the trash can will shut down after the 2nd startup tone. I have removed all the ram and reseated them, had a brief problem with the ram stick not showing up in slot 1 verified by System Report.

I have left it unplugged from power for 12 hours (while sleeping) and then held down the power on button for 10 secs. That did not seem to affect the bad behavior at all. Fan still at full speed.

Ran the Apple Hardware Test which is built in, and it reported there may be an issue with the SMC Power Manager. I just ran it again and it comes up with the same error message: There may be an issue with the System Management Controller (SMC) Ref. Code PFM006

HELP, I don’t know what to do now.

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I know you said you reset the PRAM but did you do an SMC reset already too?

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Macisgr8,

See SMC Problem Reference Code PFM 006. They go over the same error code but with another Mac. It looks like either its moisture-related, or virus related. To be safe, follow the instructions by DanJ on the thread I linked above, and then once you reinstall the OS, try to run Apple Hardware Test again. If you get the same error, it’s probably hardware related.

Let me know if this helps!

-Alex

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I have the exact same problem, same model trash can. Trying to zap the pram, it will do one chime but then shuts down.

plus it’s running very slow. I erased the internal ssd and trying to install Big Sur.

what the heck is going on?

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