![]() ![]() The computer doesn't respond to the power button when pressed. A portable Mac doesn't appear to respond properly when you close or open the lid. The computer sleeps or shuts down unexpectedly. The battery does not appear to be charging properly. ![]() The MagSafe power adaptor LED doesn't appear to indicate the correct activity. The computer is running unusually slowly although it is not experiencing abnormally high CPU utilization. A computer that supports target display mode does not switch into or out of target display mode as expected. A computer that supports target display mode switches into or out of target display mode at unexpected times. To reset the SMC on a portable Mac with a removable battery, complete the following steps:Ģ. Disconnect the MagSafe power adapter from the computer, if it's connected.Ĥ. Press and hold the power button for 5 seconds.Ħ. Reconnect the battery and MagSafe power adapter.ħ. ![]()
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