Press Shift+Control+Option on your keyboard and press the power button at the same time. Make sure you perform this combination on. Press the power button to turn on your Mac. Now press the following key combinations: Shift-Control-Option and the power button.
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Again, the instructions for what you’ll do depend on what model of Mac you’ve got, but naturally, Apple has support articles about iBooks and PowerBooks, iMacs, and Mac minis. Press the power button and hold it for a few seconds. Plug the power cord back in, then turn on your Mac. Oh, and one more thing: If your machine is an older, PowerPC model, what you’ll be looking to reset isn’t called the SMC-it’s the Power Management Unit (PMU). If you have an iMac, a Mac Mini, or a Mac Pro, resetting the SMC is dead simple: Shut down your Mac, then unplug the power cable. It doesn’t get much more difficult for most models, but if your laptop has a removable battery, you’ll have to take it out as part of the process. Press the power button to turn on the computer. Release all the keys and the power button at the same time.ĥ.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.Ĥ. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if it’s not already connected.ģ. Here are the instructions for a computer like mine, a 2012 MacBook Air:Ģ.
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The most common symptom I’ve seen of an SMC issue, though, is the one I mentioned-a Mac that won’t respond to the power button being pressed, even when its battery is fully charged.Īpple has a very long support article about what can indicate problems with the SMC, what to try before you mess with it, and then how to reset it for all Intel machines, both new and old. Connect the power adapter to your Mac on the Mac keyboard, hold down the Shift+Control+Option keys and the Power button at the same time Release all keys and the power button at the same time, the little light adapter may change colours briefly (if you have a light) to indicate the SMC has reset Boot your Mac as usual. So for example, if your Mac’s fans are constantly running even when you’re not doing much, an SMC reset could be just the thing. In fact, nothing happens at all when you press the power button.īesides screaming into your pillow, what can you do? Well, a good thing to try (and heck, just to know about in advance) is how to reset what’s called the System Management Controller (SMC).Īll Intel-based Macs have an SMC chip, which is in charge of a ton of low-level functions related to sleep, power, some lights and indicators, and fan speed.
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