![]() A question mark shows on screen when you boot your Mac.You can try an NVRAM reset when you experience any of the issues mentioned below. Problems with the NVRAM are often software-related. NVRAM stores your Mac settings such as date and time, volume level, display resolution, startup disk, and more. ![]() To Reset SMC on Mac devices without the Apple T2 Security Chip (mostly pre 2018 models), shut down your Mac and press and hold Shift + Control + Option keys on the left side of the keyboard, plus press the power button and hold all the keys together for 10 seconds.Īfter that, release all keys, then press the power button to turn on your Mac.Įver wondered what powers the memory of your Macbook? How it keeps track of date and time when you completely drain the battery or even plug out the battery from the device? Well, it is achieved with NVRAM (Nonvolatile Random-Access Memory) and a (second) small battery to power it. Wait a few seconds, then press the power button to turn on your Mac. Keep holding all four keys for another 7 seconds, then release them. Shut down your Mac and press and hold the right Shift key + left Option key + left Control key for 7 seconds, then press and hold the power button as well. ![]() Press and hold the power button for 10 seconds, then release the button. Shut down your Mac by clicking on the Apple menu at the top left corner and selecting ‘Shut Down’. To reset the SMC on a MacBook with the Apple T2 Security Chip (models from 2018 or later). How to Reset SMC on Apple T2 Chip devices There are a few different ways to reset the SMC, depending on what kind of Mac you’ve got. Light on the power adapter doesn’t correctly show whether it’s charging or has stopped.Battery and status lights not working properly.MacBook won’t turn on after opening lid.CPU fan running unusually fast even when Mac is idle. ![]() If you’re experiencing issues such as the ones listed below, you might need to reset the SMC. The SMC chip is responsible for controlling functions such as turning the computer on/off, toggle keyboard backlight, control CPU cooling fan speed, and many more. The System Management Controller a.k.a SMC is a chip that controls power delivery on all Intel-powered Mac devices. If yes, then you might want to try and reset the SMC (System management controller) or the NVRAM (Non-Volatile random-access memory) on your Mac device. Is your Mac behaving unusual for no apparent reason? Is it having issues such as the keyboard backlight not working, or sound volume not changing, or incorrect display resolution, or overall slow performance, and similar issue? ![]()
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