mrf_csspr

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Q: Mac running slow and fan running at high speed

MacPro1,1, osx 10.7.5, 8gb ram

Posted on Jan 27, 2015 5:24 AM

I have this question too

Q: Mac running slow and fan running at high speed

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by stedman1,

stedman1 Jan 27, 2015 5:26 AM in response to mrf_csspr
Level 9 (74,315 points)

Apple Watch

Jan 27, 2015 5:26 AM in response to mrf_csspr

Runaway applications can shorten battery runtime, affect performance, and increase heat and fan activity - Apple Support
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by mrf_csspr,

mrf_csspr Jan 27, 2015 6:07 AM in response to stedman1
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Jan 27, 2015 6:07 AM in response to stedman1

Thanks for the advice, but unit runs all the time on high speed including on booting an external system and fails to boot on asd 3S108 diagnostic. Only on AST/MRI gives me that error. It could be a bad CPU or MLB?
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by stedman1,

stedman1 Jan 27, 2015 6:37 AM in response to mrf_csspr
Level 9 (74,315 points)

Apple Watch

Jan 27, 2015 6:37 AM in response to mrf_csspr

Check the article below for instructions to reset the SMC and PRAM.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
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by lllaass,

lllaass Jan 27, 2015 6:52 AM in response to mrf_csspr
Level 10 (190,869 points)

Apple Watch

Jan 27, 2015 6:52 AM in response to mrf_csspr

3S108 could mean a sensor problem
http://www.macissues.com/2014/03/21/how-to-run-and-interpret-apples-hardware-tes ts-on-your-mac/
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