The computer is performing unusually slowly, though it isn't experiencing abnormally high CPU utilization.Īpplication icons may bounce in the Dock for an extended amount of time when opened.Īpplications may not function correctly, or they may stop responding after being opened.Ī computer that supports target display mode does not switch into or out of target display mode as expected, or it switches into or out of target display mode at unexpected times. The MagSafe power adapter LED doesn't indicate the correct activity. The computer sleeps or shuts down unexpectedly.
MAC SHUTDOWN COMPUTER WHEN LID CLOSED MAC
The computer doesn't respond to the power button when pressed.Ī Mac notebook computer doesn't respond properly when you close or open the lid. The display backlight doesn't respond correctly to ambient light changes on Mac computers that have this feature. The status indicator light (SIL) behaves incorrectly on Mac computers that have this feature.īattery indicator lights, if present, behave incorrectly on Mac notebooks that have a non-removable battery. The keyboard backlight behaves incorrectly on Mac computers that have this feature. The computer fans run at high speed, though the computer is not experiencing heavy usage and is properly ventilated.
Indicators that your SMC might need to be resetĪfter you perform normal troubleshooting, these symptoms may indicate that an SMC reset could be necessary: Useful when you have one or more of these issues"
Unplug it, press and hold the power button for 10 seconds.
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