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apple hardware test error DEC400

trying to boot my MacBook Pro 15inch 2012 non-Retina 2.7Ghz i7 Quad-Core A1286 to AHT APPLE HARDWARE TEST and i cant enter..just came out this message error DEC400..what does it means? is there any other way for me to do AHT??

MacBook Pro 15inch 2012 non-Retina 2.7Ghz i7 Quad-Core A1286

16GB 1600MHZ DDR3L RAM

2TB SAMSUNG 850 EVO SSD

2TB FIRECUDA SSHD

Hi,

Does it restart and run Apple Diagnostics (which is basically the same thing as AHT)?

最后更新：2017-09-30 23:03:53

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