The boot time after resetting a machines SMC can be a bit longer than usual, that is normal. No big deal, but if you have made many changes to your hardware behavior you will want to adjust stuff like sleep behavior again. Release all keys and the power button at the same time – the little light on the MagSafe adapter may change colors briefly to indicate the SMC has resetĭo keep in mind that by resetting the SMC you will lose power specific settings, like the time it takes to sleep a Mac and other customizations to power settings.On the MacBook / Pro’s keyboard, hold down the Shift+Control+Option keys and the Power button at the same time.Shutdown your MacBook Air / MacBook Pro.This is how to reset SMC on most modern Mac laptops, none of which have a removable battery: Reset SMC of a MacBook Air, MacBook Pro Retina, or MacBook Pro’s with an internal non-removable battery Do notice that the System Management Controller reset instructions are different for MacBook and MacBook Pro’s if the machine has an internal battery versus a detachable battery, additionally the procedure is different for desktop Macs than from Mac laptops. If those type of issues describe the problem encountered on the Mac and you have concluded that you need to reset your SMC, we will show you how to do it on any MacBook, MacBook Pro, MacBook Pro with Retina display, iMac, Mac Mini, and Mac Pro. * General performance and functionality problems: abnormally sluggish behavior despite no CPU or disk usage, external ports not working, airport & bluetooth aren’t showing up, external devices are not being found, etc * Video and external displays not working: display brightness functionality not working properly, target video mode isn’t working properly, external display isn’t working, etc

* Light problems and improper lighting management: battery indicator lights aren’t working, display backlighting isn’t adjusting to ambient light changes, keyboard backlights not working, etc * Power management and battery problems: Mac isn’t turning on, sleep isn’t working, random shutdowns and reboots, battery isn’t charging, Mac won’t wake from sleep, etc * Issues with your Mac cooling fans and fan management: the fans run constantly at high speed, fans run high despite low CPU usage and adequate ventilation, fans not working at all, etc Resetting a Mac SMC is particularly effective if you’re having the following types of problems: Typically, an SMC reset helps to resolve many power and hardware related issues that are otherwise unresponsive to troubleshooting techniques. When & Why Reset SMC on a Mac? Some Common Hardware Reasons We’ll show you exactly how to reset the SMC on any type of Mac (and any version of OS X) and the type of problems that it may resolve.

Mac mini reset smc