Ok, I figure out what happening, don't know if is right now not, but the computer is working now.
I was on 10.9.0 and update 10.9.5 combo, rebooted the computer, and can't boot. Use the -f from unibeast usb stick and it still won't boot. Then I try -f -x, then it boot. Download the latest Probook Installer 6.1.13r, run the OS Kext for my laptop. Reboot, and everything seem to work fine, but then the brightness not working.
Guys up in forum suggest repatch DSDT, which I did, and it keep booting in safemode, no matter what I select for my DSDT. After several try and couple of hour playing with it, not working. I noticed I have a Probook Installer 6.1.9. And do the same thing with repatching DSDT, and viola, it working correctly now with brightness and 10.9.5. I have intel HD4000 1300x789, i5 2.59 Ivy, HP 8470p.
Just so you guy know, or maybe you all knew all it. Thank you for helping.