Use Ap­ple Di­ag­nos­tics 46

Mac|Life - - FEATURE -

Your Mac in­cludes one of two di­ag­nos­tics suites, de­pend­ing on your model’s age – see bit.ly/ap­pltests for full de­tails. To run ei­ther, shut down your Mac, then dis­con­nect all ex­ter­nal de­vices ex­cept the key­board, dis­play, and mouse. Next, power on the Mac while hold­ing d. Choose your lan­guage if prompted, then the test will start. If is­sues are found, take a photo of the screen or note down any ref­er­ence codes before con­tact­ing Ap­ple Sup­port.

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