i tried to do updates from the apps store and website , but after the installation completed, reboot ,i stuck on the gray screen with apple icon and a prohibited sign , also a loading icon under the apple logo.
tried ram reset, disk premission fixed, still can't get to anywhere. just can get in safe mode. tried to install the pro installer in safe mode again, but still the same result.
my pro is 4530s i7 2630qm , f09, 4gm ram, 500gb hd, original screen, radeon graphics.