You can also find out whether your computer has the T2 Security Chip by holding Option > Apple Menu > System Information. Here’s the complete list of Macs with the Apple T2 Security Chip: Plug the power cord back in and wait for about another 5 seconds.Ĭomputers that have the Apple T2 Security Chip.Unplug the power cord and wait for about 15 seconds.Note that this method works only for desktop computers without the Apple T2 Security Chip. Here’s how to reset the SMC if you’re an owner of iMac, Mac Mini, Mac Pro, or Xserve. Release the keys and turn on your computer.Hold Shift + Control + Option + the Power button (or Touch ID button) for about 10 seconds.Shut down your Mac from the Apple menu.Reset the SMC on Mac laptops with nonremovable battery: Reinstall the battery and turn on your computer.Press and hold the power button for a few seconds.Remove the battery (if you don’t want to do it yourself, go to the nearest Apple Service Center or Apple Retail Store).
MacBooks with removable or nonremovable battery Reset the SMC on Mac laptops with removable battery: Pick your device from the list below and try it out. There are some differences on how to reset the SMC, depending on the type of computer you own. Clearly, it might be a part of the shutdown problem. The SMC (System Management Controller) is responsible for battery and thermal management as well as any processes related to closing and opening your MacBook lid and pressing the power button. If your computer keeps shutting down, consider SMC and PRAM resetting. Unfortunately, this will hardly prevent your computer from shutting down again. Once you power up your Mac after a shutdown, press Command + Alt + Esc to force quit background apps and then put your Mac to sleep, restart, or shut down from the Apple menu. This will kill the background processes, ensuring your Mac has a healthy startup. Even though your Mac is technically shut down, restart Mac once again - the proper way. Restarting your Mac is always the first idea that should come to mind. Try free How to fix your Mac shutting down
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