I have stock Dell E6440 with 900p screen.
With default MacOSX (myHack or any other boot loader) I can't get into setup screen (just reboots due to Haswell CPU), I've found bootpack for E5440 and I've changed CPU from i7 to i5 (found on forum), now Dell start up to setup screen (with DVD removed and only from hard drive) but when I want to install OS I got "The OS X installation couldn't be completed" and along with it panic(CPU 2 caller).
I've tried almost everything what I managed to find but no luck.
Any has similar laptop and managed to install Mac on it ???
I've attached screen of errors :/