Tente inicializar no Modo de segurança, mantendo pressionada a tecla Shift enquanto inicia o seu Mac. De Mac OS X: O que é inicialização segura, modo de segurança? :
Safe Boot is a special way to start up in Mac OS X 10.2 or later when troubleshooting. Safe Mode is the state Mac OS X is in after a Safe Boot. To perform a Safe Boot, hold the Shift key as your Mac starts up.
Starting up into Safe Mode does several things:
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- Mac OS X 10.5.6 or later: A Safe Boot deletes the dynamic loader shared cache at (/var/db/dyld/). A cache with issues may cause a blue screen on startup, particularly after a Software Update. Restarting normally recreates this cache.
Se o Modo de segurança funcionar, primeiro faça backup dos seus dados. Note, no entanto:
- Safe Mode in Mac OS X 10.6 or later also disables File Sharing access. This means you will not be able to mount Time Capsule disks or volumes being served by other computers running Mac OS X.
Em seguida, tente inicializar normalmente para ver o que acontece depois.