The black boot selector on a Mac Professional 2007 is a standard situation that may forestall the pc from beginning up correctly. This situation may be attributable to quite a lot of elements, together with a defective arduous drive, a corrupted working system, or an issue with the pc’s {hardware}.
There are just a few alternative ways to repair a black boot selector on a Mac Professional 2007. One possibility is to strive resetting the PRAM. This may be accomplished by holding down the Command, Possibility, P, and R keys whereas the pc is beginning up. Another choice is to strive booting the pc into Protected Mode. This may be accomplished by holding down the Shift key whereas the pc is beginning up.
