The black boot selector on a Mac Professional 2007 is a standard problem that may stop the pc from beginning up correctly. This problem might be attributable to quite a lot of components, together with a defective arduous drive, a corrupted working system, or an issue with the pc’s {hardware}.
There are a number of other ways to repair a black boot selector on a Mac Professional 2007. One choice is to strive resetting the PRAM. This may be carried out by holding down the Command, Choice, P, and R keys whereas the pc is beginning up. An alternative choice is to strive booting the pc into Secure Mode. This may be carried out by holding down the Shift key whereas the pc is beginning up.
