Chosen Solution
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.
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.
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!
