Mac wont boot and fan runs high My Mid 2013 macbook pro recently will no longer boot. I was using it normally (no excessive use) and then all of a sudden it just went black and shut off immediately. I can no longer boot it (I got it to boot once but now it't having the same problem).

Basically, when I press the power button to turn it on, the fan runs really high then stops and wont boot. I have no idea what the problem is. Any help?
Apple's official guide has several good steps. http://support.apple.com/kb/TS1367

I would start with resetting the SMC: the System Management Controller.

http://support.apple.com/kb/HT3964

If that doesn't work, reset the NVRAM (which isn't on the list) followed by attempting to boot to internet recovery.


NVRAM - Command Option P R
Recovery - Command R


Past that, you would need to open the machine and start removing all components that aren't part of the "minimal system" or take it to a technician that does that professionally.