HD4000 graphics won't work on probook 4440's ML 10.8.5

[jlcvzs]

Have I to reinstall OS X or can I get the kexts form the OS X installer without reinstalling? and how could I do that? I still have the same usb which I installed 10.8.5 with, does it help for something?

 

[RehabMan]

Have I to reinstall OS X or can I get the kexts form the OS X installer without reinstalling? and how could I do that? I still have the same usb which I installed 10.8.5 with, does it help for something?

Just run the OS X installer without erasing the partition.

 

[jlcvzs]

It worked!! I installed OS X from Unibeast USB and now I have no more graphics problems. Thanks, Rehabman!!