![]() Note : Learn about removing the battery on MacBook and MacBook Pro. Resetting the SMC on Mac portables with a battery you can remove The computer is running unusually slowly although it is not experiencing abnormally high CPU utilization.Īpplication icons may "bounce" in the Dock for an extended amount of time when launched.Īpplications may not function correctly or may stop responding after being opened. The MagSafe power adaptor LED doesn't appear to indicate the correct activity. The battery does not appear to be charging properly. The computer sleeps or shuts down unexpectedly. The computer doesn't respond to the power button when pressed.Ī portable Mac doesn't appear to 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) appears to behave incorrectly (on Mac computers that have an SIL).īattery indicator lights, if present, appear to behave incorrectly (on portables that use non-removable batteries). The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature). The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated. If the issue is still not resolved after following the troubleshooting items above, an SMC reset may be necessary.Īfter performing normal troubleshooting, these symptoms may indicate that an SMC reset may be necessary: Physically remove and re-insert the battery (if it's removable) and startup the Mac.
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