Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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AHT Error 4SNS/1/40000001:VP0R-0.000, suddenly shut down, while bootin


I´ve a big Problem with my MacBook.

When i start the macbook it doesnt boot. i see the apple sign and then shut down.

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Was the power adapter hooked up when you ran the test. If not, charge the battery fully, then hook the adapter up and run the test again and let us know your results. Next reset the SMC and run again and see if the results persist.

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This error indicates that a Voltage Sensor is not working. You may need to replace it. I would say you should probably check out the shops near you for such problems.

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