If the diagnostics test does find errors, take a note of what they are.a brief description of any errors found plus further instructions.Once complete, one of two things will appear on the screen:.Wait for Diagnostics to finish (this typically only takes a few minutes).Immediately press the D key and keep it down until you see the Diagnostics screen appear.If the problem still persists with another charger/cable, then you really should run Apple Diagnostics (you can also run diagnostics in the meantime if you haven't got access to another charger/cable).įollow the steps below to run Apple Diagnostics: If the problem still persists after doing this, an easy test to do is to see what happens if you use another charger/cable. ![]() Turn your Mac back on with the power button.After 10 seconds let go of all keys and the power button.For 10 seconds, press and hold at the same time the shift control option keys (on the left side of the built-in keyboard) and the power button.However, one thing you could do is reset the System Management Controller (SMC) to see if that resolves the issue. The lack of a charging indicator light is not a good sign, as it implies a hardware problem of some sort (i.e.
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