Sounds like you have a logic board problem (not a bad SSD) if neither external or internal drives would boot consistently. If the SSD it's self was bad then the external drive would boot consistently. As that is not the case the likely hood here is the logic board has a fault with a bad solder joint some where in the I/O logic.
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Sounds like you have a logic board problem (not a bad SSD) if neither external or internal drives won't boot consistently.
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If the SSD it's self was bad then the external drive would boot consistently. As that is not the case the likely hood here is the logic board has a fault with a bad solder joint some where in the I/O logic.
There are a few things you could try to prove this, like putting your system in the refrigerator to cool it down or a heating blanket to warm it up. Forcing the metal contacts to contract or expand.
The other possibility here is did you bang or get your system wet? If you didn't I would bring your system into an Apple Store to see if it's covered under warranty.
Sounds like you have a logic board problem (not a bad SSD) if neither external or internal drives would boot consistently. If the SSD it's self was bad then the external drive would boot consistently. As that is not the case the likely hood here is the logic board has a fault with a bad solder joint some where in the I/O logic.
There are a few things you could try to prove this, like putting your system in the refrigerator to cool it down or a heating blanket to warm it up. Forcing the metal contacts to contract or expand.
The other possibility here is did you bang or get your system wet? If you didn't I would bring your system into an Apple Store to see if it's covered under warranty.