If your MagSafe cable or power adaptor isn't working

Make sure that you've connected your power adaptor to a working plug socket. Unplug your power adaptor from the plug socket, then plug in a known-good device, such as a lamp or clock, to confirm that it turns on correctly. If the plug socket is working, connect your power adaptor and try charging your Mac. If your Mac still isn't charging, shut it down and close the display for 30 seconds, then open the display and try charging it again. If you have an Intel-based Mac, reset the SMC.

Make sure the correct wattage power adaptor for your laptop is being used. For the best charging experience, you should use the power adaptor and cable included with your Mac laptop.

Unplug the power adaptor from the wall, wait 60 seconds and then plug the adaptor back in.

• If the adaptor works after this 60 second "rest", it's most likely that you have a line noise issue with your power source. You should reset the adaptor periodically by repeating this moment of rest. This issue occurs when the AC adaptor's over-voltage protection feature senses ground noise and then turns off the adaptor.
• Some possible sources of line noise include lights with ballasts, refrigerators or mini-refrigerators that are on the same electrical circuit as your computer. This behaviour may not occur if you plug the power adaptor into an uninterruptible power supply (UPS) or plug it into a different circuit.

If your power adaptor continues to turn itself off when connected to a known-good socket, take your adaptor to an Apple Authorised Service Provider or Apple Store for further evaluation.

Sometimes when you plug the power adaptor into a wall plug socket, you may see a spark. This is usually normal and can occur when you plug any electrical appliance into a live socket. If the spark comes from somewhere other than the blades of the plug, if you experience any damage or discolouration of the adaptor, or if you have other concerns about sparking, contact Apple.

Your power adaptor comes with a removable AC plug that has the blades for inserting into a plug socket. If your Mac laptop won't charge when using the AC plug with the power adaptor, try it with another Apple AC plug, or try using an Apple Power Adaptor Extension Cable (sold separately).

If your power adaptor works after changing the AC plug or AC cord, the AC plug or AC cord that you were originally using should be replaced and no longer used.

Make sure that the power port (where you plug in the MagSafe connector) is clean and free of debris. The port is magnetic and may attract metal objects.

If the indicator light flashes

If your DC cable (the thin cord that attaches the MagSafe 2 or MagSafe connector to the power adaptor) separates at either end of the cable, immediately stop using the cable and get your cable and power supply evaluated.