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E5420 no longer working after apple update


leegray_01
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What's your KP?

Boot with -v -f and list your error. Most likely it's AppleIntelCPUPowermanagement, you could install NullCPUPowerManagement or install the patched version of AppleIntelCPUPowerManagement from 10.10.3, it's the same version for 10.10.4 found here.

 

I assume you have Chameleon loader since Clover won't have this issue.

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Jake, Thank you for responding. I am very much  outside of my element when dealing with a non windows machine. I did run the boot loader with the -v -f .

 

The issues seems to be in the AppleIntelCPUPowerManaement. How would I install the updated file when the computer will not boot, and I can not find the USB boot drive I had.... 

 

Again thank you for your assistance with this.post-79659-0-17671400-1436281139_thumb.jpeg

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Lesson learned, next time before upgrading, place NullCPUPowerManagement.kext in /Extra/Extension.

After upgrade, install the patched AppleIntelCPUPowerManagement.kext and then remove NullCPU...

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