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Lanzado en junio de 2012, modelo A1278. Procesador Intel con Turbo Boost, hasta 512 MB de RAM de video DDR5

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HD Failure and replacement cable

OK. I’m pretty sure I know the problem - and fix. I have gotten great info and advice from users here. MacBook Pro, 2012 model. HD is not recognized internally - just the NULL symbol. The user has been experiencing severe “slowness” over the past few months now followed by HD not being recognized. I suspect it is the hard-drive cable and needs replacing. I CAN mount it externally in an enclosure - although very slow! I have installed a new HD cable for this model before for the same reason for another client. I know the 2012/13 MacBook Pros has had this as a common issue. SO, I am going to order/install a new cable AND a new SSD.

I will use “Migration Assistant” to move my clients files over instead of cloning. Most of her documents are basic Word, PowerPoint, Excel… Photos (iCloud). I will also back-up to a big USB flash drive as well.

This model “officially” supported only 8 GB of memory but I have read they technically can support 16GB RAM. It has 4 right now. Certainly another 4 GB chip would help. Should I go for more? Not sure it is worth it being it is a 2012. And I am installing an SSD which should speed things up a LOT.

One more thing. The calendar is showing Dec. 2018 … and it’s late April 2018. Do I have a MB issue here? Or is that the result of that bad cable? I am pretty sure the MB Pro 2012 has no CMOS but a capacitor that would need soldering if that is the issue. That is above my pay grade. ))

THX for any suggestions or help.

#Dan … Here is screenshot of battery health using CoconutBattery as you suggested. It is reporting it as good.. unless you see something different. Thx for your help.

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Contestado! Ver respuesta Yo también tengo este problema

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It does sound like you have a failing battery here. I would install CoconutBattery. Take a snapshot of the main window and paste it here for us to see Agregar imágenes a una pregunta existente

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I'm assuming I can run this from a USB flash drive?

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#Dan . Just added the screenshot of CoconutBattery. I assume battery is good? Thx for your reply.

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@ckayjr - Yes, its still good, but its about halfway in its lifespan.

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Thanks Dan! Much appreciated!

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Solución Elegida

The date and time is reset when the battery is unplugged from the MacBook.

MacBook will need to be connected to wifi and date and time will be synchronised.

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I did mount the HD externally. And connected to WiFi… but the calendar/date did not sync .. I did not check that setting either. I will check today. Thx for your answer!

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Don’t think I posted the successful conclusion. Again, as with many of these 2012/13 machines, the HD cable goes bad. Installed new HD cable; installed a new SSD. Client is very happy!

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Chuck Kay estará eternamente agradecido.
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