Yosemite 10.10.3

I had the tutorial on update Yosemite 10.10.2 from 10.10.1, the QE/CI suddenly disappeared until I had to patched the 2 graphics kexts. Someone ask me to make the 10.10.3 update because after the update, their systems don’t work. My HP x360 i7-4510u and HD4400 does work after the update using the same patched kexts …