Connect your notebook to a power source.

MacBooks With Non-Removable Battery, like MacBook Air, MacBook Pro Resetting the SMC is done slightly differently depending on the type of Mac you have. if it is taking too long (hours), then reset the System Management Controller (SMC) on your Mac to fix this problem.

If your Mac become unresponsive during setup, first allow your Mac to complete the process. See also: Mac White Screen Fix “Setting Up Your Mac…” You Mac may get stuck when a problem occurs with the OS X update that prevents the computer from booting up successfully.

If you experience this problem during setup startup and can’t continue, this article offers tips on how to fix this problem. Several users have reported an issue in which their Mac gets stuck or freezes (becomes unresponsive) during the installation or configuration of an OS X update. Users have stated that software update went smoothly until the Mac was stuck on the “Setting up your Mac…” screen at boot for a very long time.

Instal the new for mac Frozen