This is An Exclusive QE/CI Patch For OS X Yosemite 10.10.2!!
For Those Who Are Victim of HD Graphics Device ID Changed Can Use These Patched Kexts Without Any Need of Patching DSDT or Adding Fake PCI ID !!!
Install Using Kext Utility!!
Also Uncheck Reduce Transparency in Sys Pref>> Accessibility..
Credits: thanks to Mirone for his tutorial: http://www.insanelymac.com/forum/topic/304267-intel-hd4400-full-qeci-in-yosemite-10102/