Chosen Solution
I have a macbook that shuting down on every posibile loading bar…I dont have an original hard drive, so i have put in another, but when i try to boot from usb OSX 10.11, its shuts down on 20% of bar loading,,,I have tried to boot from DVD OSX 10.5, same thing, shuts down on about 20%…I have made another boot stick, same thing…With hard drive or without hard drive, same thing…I have reseted smc, same thing…AHT test, everything is ok…Changed ram, same….I have disconected everything from MB, even keyboard (i am shorted SMC_ONOFF_L with ground to turn on) and…….Bloody same thing…. I dont have idea what else to do… Please every help is welcome….
Sounds like you’re hitting an expired certificate issue. Apple lets older OS’s certificates expire to push people to newer OS’s and/or newer systems. OS-X El Capitan 10.11.x installers now face this issue! You’ll need to back date your systems date setting to one thats within the OS’s release window Sept 30, 2015 to June 30, 2016.
