Given the efficiency and convenience of sleep mode on Mac systems, it is often a rarity that we end up restarting our Macs. When we do, we expect it to boot to normal operation; however, sometimes a snafu may result in your Mac booting to a gray screen, and no further. Often such behavior happens because of a specific problem, such as a power outage, or the installation of a new software package, but regardless, if it happens there are essentially only a few things that you can do. Continue reading ⇒